.hero {
    border: none;
    outline: none;
    padding: 6rem 2rem;
    background-image: url("/static/images/hero-illustration.png");
    background-size: contain;
    background-position: right center;
    background-repeat: no-repeat;
    background-color: #ffffff;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
    min-height: 650px;
    display: flex;
    align-items: center;
    border-radius: 1.5rem;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right,
            rgba(255, 255, 255, 0.98) 0%,
            rgba(255, 255, 255, 0.92) 40%,
            rgba(255, 255, 255, 0.7) 50%,
            rgba(255, 255, 255, 0.3) 60%,
            transparent 70%);
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    max-width: 600px;
    margin: 0;
    position: relative;
    z-index: 2;
    width: 45%;
    padding-left: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin: 0;
    color: var(--text-color);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.2;
}

.hero .lead {
    font-size: 1.375rem;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.6;
    margin: 0;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.hero-actions .btn {
    min-width: 160px;
}

@media (max-width: 900px) {
    .hero {
        padding: 4rem 2rem;
        min-height: 500px;
        background-size: cover;
        background-position: center;
        border-radius: 1.5rem;
    }

    .hero::before {
        background: linear-gradient(to bottom,
                rgba(255, 255, 255, 0.98) 0%,
                rgba(255, 255, 255, 0.95) 50%,
                rgba(255, 255, 255, 0.85) 70%,
                transparent 100%);
    }

    .hero-content {
        width: 100%;
        max-width: 100%;
        padding-left: 0;
        text-align: center;
        align-items: center;
        margin: 0 auto;
    }

    .hero h1 {
        font-size: 2.75rem;
    }

    .hero-actions {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 3rem 1.5rem;
        min-height: 450px;
        border-radius: 1.5rem;
    }

    .hero-content {
        padding-left: 0;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero .lead {
        font-size: 1.125rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }

    .hero-actions .btn {
        width: 100%;
        min-width: 0;
    }
}

.faq-section {
    max-width: 800px;
    margin: 4rem auto;
    padding: 0 1.5rem;
}

.faq-section h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    overflow: hidden;
    background: var(--bg-color);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item:hover {
    box-shadow: var(--shadow-sm);
}

.faq-item[aria-expanded="true"] {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: var(--bg-color);
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s ease;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    font-family: inherit;
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question:focus {
    outline: none;
    background: var(--bg-secondary);
}

.faq-question span {
    flex: 1;
    margin-right: 1rem;
}

.faq-icon {
    flex-shrink: 0;
    transition: transform 0.3s ease;
    color: var(--text-secondary);
}

.faq-item[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition:
        max-height 0.3s ease,
        padding 0.3s ease;
    padding: 0 1.5rem;
}

.faq-item[aria-expanded="true"] .faq-answer {
    max-height: 500px;
    padding: 0 1.5rem 1.25rem;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
    padding-top: 0.5rem;
}

@media (max-width: 640px) {
    .faq-section {
        margin: 3rem auto;
        padding: 0 1rem;
    }

    .faq-section h2 {
        font-size: 1.75rem;
        margin-bottom: 2rem;
    }

    .faq-question {
        padding: 1rem 1.25rem;
        font-size: 0.9375rem;
    }

    .faq-answer {
        padding: 0 1.25rem;
    }

    .faq-item[aria-expanded="true"] .faq-answer {
        padding: 0 1.25rem 1rem;
    }
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

@media (max-width: 640px) {
    .features {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 3rem;
    }
}

.mission-statement {
    text-align: center;
    max-width: 700px;
    margin: 3rem auto 4rem;
    padding: 3rem 2.5rem;
    background: var(--bg-color);
    border-radius: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.mission-statement h3 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0 0 1rem 0;
    letter-spacing: -0.01em;
}

.mission-statement p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin: 0;
}

.benefits-section {
    margin-bottom: 2rem;
}

.benefits-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.tab-button {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    background: var(--bg-color);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.tab-button:hover:not(.active) {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
}

.tab-button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.2);
}

.benefits-content {
    position: relative;
}

.benefit-tab-pane {
    display: none;
}

.benefit-tab-pane.active {
    display: block;
}

.benefit-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 900px) {
    .benefit-cards-container {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 640px) {
    .benefit-cards-container {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

.how-it-works {
    text-align: center;
    margin-top: 3rem;
    padding: 3rem 0;
    background: var(--bg-secondary);
    border-radius: 1.5rem;
    border: 1px solid var(--border-color);
}

.how-it-works h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
}

.process-steps-learner,
.process-steps-instructor {
    display: none;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1rem;
}

.process-steps-learner.active,
.process-steps-instructor.active {
    display: grid;
}

@media (max-width: 900px) {

    .process-steps-learner,
    .process-steps-instructor {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 640px) {

    .process-steps-learner,
    .process-steps-instructor {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

.process-step {
    background: var(--bg-color);
    padding: 2.5rem 2rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.process-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-color);
}

.process-step-number {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    transition: all 0.25s ease;
}

.process-step:hover .process-step-number {
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
}

.process-step h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.process-step p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    gap: 1.5rem;
    flex-wrap: wrap;
}

.page-header h1 {
    margin: 0;
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    flex: 1 1 auto;
    min-width: 200px;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

@media (max-width: 640px) {
    .page-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .page-header h1 {
        font-size: 1.75rem;
        min-width: 0;
    }

    .header-actions {
        width: 100%;
    }

    .header-actions .btn {
        flex: 1 1 auto;
    }
}

.proposals-context {
    background: rgba(79, 70, 229, 0.04);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary-color);
    border-radius: 0.75rem;
    padding: 1rem 1.25rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.proposals-context p {
    margin: 0;
}

@media (max-width: 640px) {
    .proposals-context {
        padding: 0.875rem 1rem;
        font-size: 0.875rem;
        margin-bottom: 1.5rem;
    }
}

.proposals-list {
    display: grid;
    gap: 1.5rem;
}

@media (max-width: 640px) {
    .proposals-list {
        gap: 1.25rem;
    }
}

.proposal-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.proposal-header h3 {
    margin: 0;
    flex: 1;
    font-size: 1.375rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.proposal-header h3 a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.proposal-header h3 a:hover {
    color: var(--primary-color);
}

.proposal-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.proposal-author {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-weight: 500;
}

.proposal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 640px) {
    .proposal-actions {
        flex-direction: column;
    }

    .proposal-actions .btn {
        width: 100%;
    }
}

.proposal-meta-bar {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    padding: 1.25rem 0;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: 2.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

@media (max-width: 640px) {
    .proposal-meta-bar {
        gap: 1rem;
        font-size: 0.8125rem;
        padding: 1rem 0;
        margin-bottom: 2rem;
    }
}

.status-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
}

.status-context {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-style: italic;
}

.proposal-status-card {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    transition: all 0.2s ease;
}

.proposal-status-card-highlight {
    border-left: 4px solid var(--warning-color);
    background: rgba(200, 154, 90, 0.1);
    box-shadow: var(--shadow-md);
}

.proposal-status-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.proposal-view-status-badge {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 700;
}

.proposal-status-context {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

.proposal-status-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    padding-top: 1rem;
    margin-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.proposal-status-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.proposal-status-value {
    color: var(--text-color);
    font-weight: 500;
}

.proposal-status-review-notes {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
}

.proposal-status-review-notes h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: var(--text-color);
}

.proposal-status-review-content {
    color: var(--text-color);
    line-height: 1.8;
    font-size: 0.9375rem;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
}

.proposal-status-review-content p:last-child {
    margin-bottom: 0;
}

.proposal-status-review-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

.proposal-status-help {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
    line-height: 1.6;
}

@media (max-width: 640px) {
    .proposal-status-card {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .proposal-status-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
        margin-bottom: 1.25rem;
    }

    .proposal-view-status-badge {
        padding: 0.4375rem 1rem;
        font-size: 0.8125rem;
    }

    .proposal-status-context {
        font-size: 0.875rem;
    }

    .proposal-status-author {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .proposal-status-review-notes {
        margin-top: 1.25rem;
        padding-top: 1.25rem;
    }

    .proposal-status-review-content {
        padding: 0.875rem 1rem;
        font-size: 0.875rem;
    }

    .proposal-status-help {
        margin-top: 1.25rem;
        padding-top: 1.25rem;
        font-size: 0.8125rem;
    }
}

.proposal-content {
    background: var(--bg-color);
    padding: 2.5rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.proposal-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    letter-spacing: -0.01em;
}

.proposal-content h2:first-child {
    margin-top: 0;
}

.proposal-content-value {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.proposal-content-value h1,
.proposal-content-value h2,
.proposal-content-value h3,
.proposal-content-value h4,
.proposal-content-value h5,
.proposal-content-value h6 {
    color: var(--text-color);
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.proposal-content-value h1 {
    font-size: 1.25rem;
}

.proposal-content-value h2 {
    font-size: 1.125rem;
}

.proposal-content-value h3 {
    font-size: 1rem;
}

.proposal-content-value h4 {
    font-size: 0.9375rem;
}

.proposal-content-value h5,
.proposal-content-value h6 {
    font-size: 0.875rem;
}

.proposal-content-value h1:first-child,
.proposal-content-value h2:first-child,
.proposal-content-value h3:first-child,
.proposal-content-value h4:first-child,
.proposal-content-value h5:first-child,
.proposal-content-value h6:first-child {
    margin-top: 0;
}

.proposal-content-value p {
    margin-bottom: 1rem;
}

.proposal-content-value p:last-child {
    margin-bottom: 0;
}

.proposal-content-value ul,
.proposal-content-value ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.proposal-content-value li {
    margin-bottom: 0.5rem;
}

.proposal-content-value ul li {
    list-style-type: disc;
}

.proposal-content-value ol li {
    list-style-type: decimal;
}

.proposal-content-value code {
    background: var(--bg-color);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.9em;
    font-family: "Courier New", Courier, monospace;
    color: var(--primary-color);
}

.proposal-content-value pre {
    background: var(--bg-color);
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

.proposal-content-value pre code {
    background: transparent;
    padding: 0;
    color: var(--text-color);
    font-size: 0.9rem;
}

.proposal-content-value a {
    color: var(--accent-color);
    text-decoration: underline;
}

.proposal-content-value a:hover {
    color: var(--accent-hover);
}

.proposal-content-value em {
    font-style: italic;
}

.proposal-content-value strong {
    font-weight: 600;
    color: var(--text-color);
}

.proposal-content-value blockquote {
    border-left: 3px solid var(--border-color);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

.proposal-dates-footer {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
    font-size: 0.875rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

@media (max-width: 640px) {
    .proposal-dates-footer {
        gap: 1rem;
        font-size: 0.8125rem;
        margin-top: 1.5rem;
        padding-top: 1.25rem;
    }
}

.proposal-summary {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.7;
    font-size: 0.9375rem;
}

.form-container {
    background: var(--bg-color);
    padding: 2.5rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.modules-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.modules-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modules-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.module-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.module-item {
    padding: 1.5rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    transition: all 0.2s ease;
    margin-bottom: 1rem;
}

.module-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.module-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    gap: 1rem;
}

.module-header h3 {
    margin: 0;
    flex: 1;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.module-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.btn-edit-module,
.btn-delete-module {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-edit-module:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-delete-module:hover {
    background: var(--danger-color);
    border-color: var(--danger-color);
    color: white;
}

.module-description {
    margin: 0.75rem 0 1rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.readings-list {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.reading-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-light);
}

.reading-item:last-child {
    border-bottom: none;
}

.reading-item a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.reading-item a:hover {
    color: var(--primary-color);
}

.btn-add-reading {
    margin-top: 0.75rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: 0.5rem;
    border: 1px dashed var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.btn-add-reading:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.profile-container {
    max-width: 800px;
    margin: 0 auto;
}

.profile-card {
    background: var(--bg-color);
    padding: 2.5rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.profile-section {
    margin-bottom: 2.5rem;
}

.profile-section:last-child {
    margin-bottom: 0;
}

.profile-section h2 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-size: 1.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.profile-field {
    margin-bottom: 1.5rem;
}

.profile-field:last-child {
    margin-bottom: 0;
}

.profile-field label {
    display: block;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.profile-value {
    font-size: 1.125rem;
    color: var(--text-color);
}

.profile-field input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    border: 1.5px solid var(--border-color);
    border-radius: 0.75rem;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--bg-color);
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.profile-field input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.08);
}

.profile-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 640px) {
    .profile-actions {
        grid-template-columns: 1fr;
    }
}

.role-badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: capitalize;
}

.role-student {
    background-color: #dbeafe;
    color: #1e40af;
}

.role-instructor {
    background: #f5e6c7;
    color: #8a6a3a;
}

.role-admin {
    background: #b8e6e6;
    color: #2a6a6a;
}

@media (max-width: 900px) {
    .hero {
        padding: 4rem 1.5rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .lead {
        font-size: 1.25rem;
    }

    .container {
        padding: 0 1.25rem;
    }

    .main-content {
        padding: 2rem 0;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 3rem 1rem;
        margin-bottom: 2rem;
    }

    .hero h1 {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero .lead {
        font-size: 1.125rem;
    }

    .container {
        padding: 0 1rem;
    }

    .main-content {
        padding: 1.5rem 0;
    }

    .nav-links {
        flex-wrap: wrap;
        gap: 0.5rem;
        font-size: 0.9375rem;
    }

    .mission-statement {
        padding: 2rem 1.5rem;
        margin: 2rem auto 2.5rem;
    }

    .mission-statement h3 {
        font-size: 1.5rem;
        margin-bottom: 0.875rem;
    }

    .mission-statement p {
        font-size: 1rem;
    }

    .benefits-tabs {
        gap: 0.5rem;
        margin-bottom: 2rem;
    }

    .tab-button {
        padding: 0.75rem 1.25rem;
        font-size: 0.9375rem;
    }

    .how-it-works {
        padding: 2rem 1rem;
        margin-top: 2rem;
    }

    .how-it-works h2 {
        font-size: 1.625rem;
        margin-bottom: 1.5rem;
    }

    .process-step {
        padding: 2rem 1.5rem;
    }

    .user-dropdown-menu {
        right: 0;
        left: auto;
        min-width: 220px;
    }

    .auth-card {
        padding: 2rem;
    }

    .auth-card h2 {
        font-size: 1.625rem;
    }

    .form-group input,
    .form-group textarea {
        padding: 0.75rem 0.875rem;
        font-size: 1rem;
    }

    .proposal-card {
        padding: 1.5rem;
    }

    .proposal-header h3 {
        font-size: 1.25rem;
    }

    .feature-card,
    .benefit-card {
        padding: 1.75rem;
    }

    .profile-card,
    .review-card,
    .review-notes-card,
    .proposal-content,
    .form-container {
        padding: 2rem;
    }

    .modules-section {
        margin-top: 2rem;
        padding-top: 1.5rem;
    }

    .modules-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .modules-header h3 {
        font-size: 1.25rem;
    }

    .module-item {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .module-item-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .module-item-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .modal-body {
        padding: 1.5rem;
    }

    .modal-header {
        padding: 1.25rem 1.5rem;
    }

    .modal-header h2 {
        font-size: 1.5rem;
    }
}

.catalog-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.catalog-controls h1 {
    margin: 0;
}

.search-input-wrapper {
    position: relative;
    flex: 1;
    min-width: 250px;
    max-width: 400px;
}

.search-input-wrapper svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1.25rem;
    height: 1.25rem;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input-wrapper input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 1.5px solid var(--border-color);
    border-radius: 0.75rem;
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-color);
    color: var(--text-color);
}

.search-input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.filter-dropdown {
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: 0.75rem;
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-color);
    color: var(--text-color);
    cursor: pointer;
}

.filter-dropdown:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

@media (max-width: 900px) {
    .course-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 640px) {
    .course-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

.course-card {
    background: var(--bg-color);
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.course-card-header {
    height: 160px;
    background: linear-gradient(135deg,
            var(--primary-color) 0%,
            var(--accent-color) 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-card-header::before {
    content: "📚";
    font-size: 4rem;
    opacity: 0.3;
}

.course-card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0 0 0.5rem 0;
    line-height: 1.4;
}

.course-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.course-card-summary {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-top: auto;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary-color);
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.module-count {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.course-hero {
    background: linear-gradient(135deg,
            var(--primary-color) 0%,
            var(--accent-color) 100%);
    border-radius: 1.5rem;
    padding: 4rem 3rem;
    margin-bottom: 3rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.course-hero::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle,
            rgba(255, 255, 255, 0.1) 0%,
            transparent 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.course-hero-content {
    position: relative;
    z-index: 1;
}

.course-hero h1 {
    font-size: 2.75rem;
    font-weight: 700;
    margin: 0 0 1rem 0;
    color: white;
    line-height: 1.2;
}

.course-hero p {
    font-size: 1.25rem;
    margin: 0 0 1.5rem 0;
    opacity: 0.95;
    line-height: 1.6;
    max-width: 600px;
}

.course-meta-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.course-meta-pills .pill {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.course-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.course-main {
    min-width: 0;
}

.course-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.instructor-card {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.instructor-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    color: var(--text-color);
}

.instructor-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.instructor-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg,
            var(--primary-color) 0%,
            var(--accent-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.instructor-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.course-details-card {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.course-details-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    color: var(--text-color);
}

.course-detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.9375rem;
}

.course-detail-item:last-child {
    border-bottom: none;
}

.course-detail-label {
    color: var(--text-secondary);
}

.course-detail-value {
    color: var(--text-color);
    font-weight: 500;
}

.curriculum-section {
    margin-top: 3rem;
}

.curriculum-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.curriculum-section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-color);
}

.empty-modules-message {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.module-accordion {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.2s ease;
}

.module-accordion:last-child {
    margin-bottom: 0;
}

.module-accordion.expanded {
    box-shadow: var(--shadow-sm);
}

.module-accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s ease;
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    font-family: inherit;
    font-size: inherit;
}

.module-accordion-header:hover {
    background: var(--bg-secondary);
}

.module-accordion-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
    flex: 1;
}

.module-accordion-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.module-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.module-accordion-toggle {
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: transform 0.2s ease;
    margin-left: 1rem;
    flex-shrink: 0;
}

.module-accordion-header h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    flex: 1;
}

.module-accordion.expanded .module-accordion-toggle {
    transform: rotate(180deg);
}

.module-accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.module-accordion.expanded .module-accordion-content {
    max-height: 2000px;
}

.module-accordion-body {
    padding: 0 1.5rem 1.5rem 1.5rem;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.lesson-item-icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    opacity: 0.6;
}

.lesson-placeholder {
    color: var(--text-muted);
    font-style: italic;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    text-align: center;
}

.module-content-editor {
    padding: 1rem 0;
}

.module-content-editor h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    color: var(--text-color);
}

.module-content-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: 0.75rem;
    font-size: 0.9375rem;
    font-family: inherit;
    line-height: 1.6;
    resize: vertical;
    background: var(--bg-color);
    color: var(--text-color);
}

.module-content-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.module-content-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.content-save-status {
    font-size: 0.875rem;
    font-weight: 500;
}

@media (max-width: 900px) {
    .course-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .course-hero {
        padding: 3rem 2rem;
    }

    .course-hero h1 {
        font-size: 2.25rem;
    }

    .course-hero p {
        font-size: 1.125rem;
    }
}

@media (max-width: 640px) {
    .catalog-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .search-input-wrapper {
        max-width: 100%;
    }

    .course-hero {
        padding: 2.5rem 1.5rem;
        margin-bottom: 2rem;
    }

    .course-hero h1 {
        font-size: 1.875rem;
    }

    .course-hero p {
        font-size: 1rem;
    }

    .course-meta-pills {
        flex-direction: column;
        align-items: flex-start;
    }

    .instructor-card,
    .course-details-card {
        padding: 1.5rem;
    }

    .curriculum-header {
        flex-direction: column;
        align-items: stretch;
    }

    .curriculum-header h2 {
        margin-bottom: 0.5rem;
    }

    .module-actions {
        flex-wrap: wrap;
    }
}

.content-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.content-list-loading,
.content-list-error,
.content-list-empty {
    padding: 1rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.content-list-error {
    color: var(--danger-color);
}

.content-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background-color: var(--bg-secondary);
    border-radius: 0.5rem;
    transition: background-color 0.15s ease;
}

.content-item:hover {
    background-color: var(--bg-tertiary);
}

.content-item-icon {
    flex-shrink: 0;
    color: var(--text-muted);
}

.content-item-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

.content-item-title {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.content-item-title:hover {
    color: var(--primary-color);
}

.content-status-badge {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    white-space: nowrap;
}

.content-status-draft {
    background-color: var(--warning-color);
    color: white;
}

.content-status-published {
    background-color: var(--success-color);
    color: white;
}

.content-item-actions {
    flex-shrink: 0;
    display: flex;
    gap: 0.5rem;
}

.content-new-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.content-new-header-section {
    margin-bottom: 2.5rem;
}

.content-new-breadcrumb {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.content-new-breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.15s ease;
}

.content-new-breadcrumb a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.content-new-title {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.2;
}

.content-new-subtitle {
    margin: 0.75rem 0 0 0;
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.6;
}

.content-new-form {
    background: var(--bg-color);
    padding: 2.5rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.content-new-type-row {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.content-new-type-row label {
    display: block;
    margin-bottom: 0.75rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-color);
}

.content-new-type-row select {
    display: block;
    width: 100%;
    max-width: 14rem;
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--text-color);
    background: var(--bg-color);
    border: 1.5px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.content-new-type-row select:hover {
    border-color: var(--primary-light);
}

.content-new-type-row select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.lecture-edit-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.lecture-edit-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.lecture-edit-header-left {
    flex: 1;
    min-width: 200px;
}

.lecture-edit-header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.content-new-form-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
}

.content-new-form-header-left {
    flex: 1;
    min-width: 200px;
}

.content-new-form-header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.lecture-title-input {
    width: 100%;
    font-size: 1.75rem;
    font-weight: 600;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.15s ease;
}

.lecture-title-input:hover {
    border-color: var(--primary-light);
    background-color: var(--bg-secondary);
}

.lecture-title-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--bg-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.lecture-editor {
    display: flex;
    flex-direction: column;
    min-height: 500px;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
}

.lecture-editor-pane-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-light);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    gap: 0.5rem;
}

.format-selector {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    font-family: inherit;
    color: var(--text-color);
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.format-selector:hover {
    border-color: var(--primary-light);
    background: var(--bg-secondary);
}

.format-selector:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(var(--primary-color-rgb), 0.1);
}

/* Unified editor area - container for all editor types */
.unified-editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 400px;
    background-color: var(--bg-color);
}

.unified-editor-area .EasyMDEContainer {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.unified-editor-area .EasyMDEContainer .CodeMirror {
    flex: 1;
    border: none;
    border-radius: 0;
}

.unified-editor-area .editor-toolbar {
    border: none;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    border-radius: 0;
}

/* Plain text editor wrapper (CodeMirror) */
.plain-text-editor-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.plain-text-editor-wrapper .CodeMirror {
    flex: 1;
    height: auto;
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Plain text editor fallback textarea */
.plain-text-editor-textarea {
    flex: 1;
    width: 100%;
    min-height: 400px;
    padding: 1rem;
    border: none;
    resize: none;
    font-family: "JetBrains Mono", "Fira Code", monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    background-color: var(--bg-color);
}

.plain-text-editor-textarea:focus {
    outline: none;
}

/* Rich text editor (Quill) */
.rich-text-editor {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.unified-editor-area .ql-toolbar {
    border: none;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.unified-editor-area .ql-container {
    flex: 1;
    border: none;
    font-size: 1rem;
    font-family: inherit;
}

.unified-editor-area .ql-editor {
    padding: 1rem;
    min-height: 400px;
}

.unified-editor-area .ql-editor.ql-blank::before {
    font-style: normal;
    color: var(--text-muted);
}

/* Markdown editor textarea (EasyMDE will replace it) */
.markdown-editor-textarea {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 400px;
    background-color: var(--bg-color);
}

.save-status {
    font-size: 0.8125rem;
    color: var(--text-muted);
    transition: color 0.2s ease, opacity 0.2s ease;
    min-width: 60px;
    text-align: right;
}

.save-status:empty {
    opacity: 0;
}

.save-status.saving {
    color: var(--text-secondary);
}

.save-status.saved {
    color: var(--success-color);
}

.save-status.error {
    color: var(--danger-color);
}

/* File uploader */
.file-uploader {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
}

.file-drop-zone {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    padding: 3rem;
    background-color: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.file-drop-zone:hover,
.file-drop-zone.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(var(--primary-color-rgb), 0.05);
}

.file-input {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.file-drop-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.file-drop-icon {
    color: var(--text-muted);
}

.file-drop-zone:hover .file-drop-icon,
.file-drop-zone.drag-over .file-drop-icon {
    color: var(--primary-color);
}

.file-drop-text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-color);
    margin: 0;
}

.file-drop-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.file-preview {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-light);
}

.file-preview-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.file-preview-name {
    font-weight: 500;
    color: var(--text-color);
}

.file-preview-size {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.file-preview-remove {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    color: var(--danger-color);
    background: transparent;
    border: 1px solid var(--danger-color);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.file-preview-remove:hover {
    background-color: var(--danger-color);
    color: white;
}

@media (max-width: 900px) {
    .content-new-container {
        padding: 1.5rem 1rem;
    }

    .content-new-title {
        font-size: 2rem;
    }

    .content-new-form {
        padding: 1.5rem;
        border-radius: 1rem;
    }

    .content-new-form-header {
        flex-direction: row;
        align-items: center;
        gap: 1rem;
    }

    .content-new-form-header-left {
        flex: 1;
        min-width: 0;
    }

    .content-new-form-header-right {
        flex-shrink: 0;
    }

    .lecture-title-input {
        font-size: 1.25rem;
    }
}

.lecture-view-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

.lecture-view-header {
    margin-bottom: 2rem;
}

.lecture-view-breadcrumb {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.lecture-view-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
}

.lecture-view-breadcrumb a:hover {
    color: var(--primary-color);
}

.lecture-view-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.lecture-view-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.lecture-view-content {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 2rem;
}

.lecture-view-content .proposal-content-value {
    font-size: 1rem;
    line-height: 1.8;
}

.lecture-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.course-view-hero {
    background: linear-gradient(135deg,
            var(--primary-color) 0%,
            var(--accent-color) 100%);
    border-radius: 1.5rem;
    padding: 3rem;
    margin-bottom: 2.5rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.course-view-hero::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle,
            rgba(255, 255, 255, 0.1) 0%,
            transparent 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.course-view-hero-content {
    position: relative;
    z-index: 1;
}

.course-view-hero-main h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 0 1rem 0;
    color: white;
    line-height: 1.2;
}

.course-view-summary {
    font-size: 1.125rem;
    margin: 0 0 1.5rem 0;
    opacity: 0.95;
    line-height: 1.7;
    max-width: 700px;
}

.course-edit-hero {
    background: linear-gradient(135deg,
            var(--primary-color) 0%,
            var(--accent-color) 100%);
    border-radius: 1.5rem;
    padding: 3rem;
    margin-bottom: 2.5rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.course-edit-hero::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle,
            rgba(255, 255, 255, 0.1) 0%,
            transparent 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.course-edit-hero-content {
    position: relative;
    z-index: 1;
}

.course-hero-title-input {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 0 1rem 0;
    color: white;
    line-height: 1.2;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    width: 100%;
    transition: all 0.2s ease;
}

.course-hero-title-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.course-hero-title-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.course-hero-summary-textarea {
    font-size: 1.125rem;
    margin: 0 0 1.5rem 0;
    color: white !important;
    line-height: 1.7;
    width: 100%;
    background: rgba(255, 255, 255, 0.15) !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    resize: vertical;
    transition: all 0.2s ease;
    font-family: inherit;
}

.course-hero-summary-textarea:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.25) !important;
    border-color: rgba(255, 255, 255, 0.5) !important;
    color: white !important;
}

.course-hero-summary-textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.course-view-instructor-inline {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.course-view-instructor-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    flex-shrink: 0;
}

.course-view-instructor-details {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.course-view-instructor-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.75;
}

.course-view-instructor-name {
    font-weight: 600;
    font-size: 0.9375rem;
}

.course-view-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.course-view-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 2rem;
    font-size: 0.8125rem;
    font-weight: 600;
}

.course-view-badge-success {
    background: rgba(16, 185, 129, 0.3);
}

.course-view-stat {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.875rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 2rem;
    font-size: 0.8125rem;
    font-weight: 500;
}

.course-view-stat svg {
    opacity: 0.9;
}

.course-view-content {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.course-view-main {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.course-view-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.course-view-section {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.75rem;
    transition: box-shadow 0.2s ease;
}

.course-view-section:hover {
    box-shadow: var(--shadow-sm);
}

.course-view-section-header {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    margin-bottom: 1.25rem;
}

.course-view-section-icon {
    width: 44px;
    height: 44px;
    border-radius: 0.75rem;
    background: linear-gradient(135deg,
            rgba(79, 70, 229, 0.1) 0%,
            rgba(139, 92, 246, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    flex-shrink: 0;
}

.course-view-section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-color);
}

.course-view-section-body {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.course-view-section-body p {
    margin: 0 0 0.75rem 0;
}

.course-view-section-body p:last-child {
    margin-bottom: 0;
}

.course-view-section-body ul,
.course-view-section-body ol {
    margin: 0;
    padding-left: 1.25rem;
}

.course-view-section-body li {
    margin-bottom: 0.5rem;
}

.course-view-section-body li:last-child {
    margin-bottom: 0;
}

.course-view-objectives-content {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.course-view-objectives-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.75rem;
}

.course-view-objectives-content li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    margin: 0;
}

.course-view-objectives-content li::before {
    content: "";
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2310b981' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 11.08V12a10 10 0 1 1-5.93-9.14'/%3E%3Cpolyline points='22 4 12 14.01 9 11.01'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.course-view-objectives-content p {
    margin: 0 0 0.75rem 0;
}

.course-view-objectives-content p:last-child {
    margin-bottom: 0;
}

.course-view-instructor-card,
.course-view-details-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
}

.course-view-instructor-card h3,
.course-view-details-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 1.25rem 0;
    color: var(--text-color);
}

.course-view-instructor-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.course-view-instructor-avatar-large {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg,
            var(--primary-color) 0%,
            var(--accent-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    flex-shrink: 0;
}

.course-view-instructor-info {
    flex: 1;
    min-width: 0;
}

.course-view-instructor-name-large {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.course-view-detail-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-light);
}

.course-view-detail-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.course-view-detail-row:first-child {
    padding-top: 0;
}

.course-view-detail-icon {
    color: var(--text-muted);
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.course-view-detail-label {
    flex: 1;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.course-view-detail-value {
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.875rem;
}

@media (max-width: 900px) {
    .course-view-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .course-view-hero {
        padding: 2.5rem 2rem;
    }

    .course-view-hero-main h1 {
        font-size: 2rem;
    }

    .course-view-summary {
        font-size: 1rem;
    }

    .course-view-sidebar {
        order: -1;
    }
}

@media (max-width: 640px) {
    .course-view-hero {
        padding: 2rem 1.5rem;
        border-radius: 1rem;
    }

    .course-view-hero-main h1 {
        font-size: 1.75rem;
    }

    .module-accordion {
        background: var(--bg-color);
        border: 1px solid var(--border-color);
        border-radius: 0.75rem;
        margin-bottom: 1rem;
        overflow: hidden;
        transition: all 0.2s ease;
    }

    .module-accordion-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1.25rem 1.5rem;
        cursor: pointer;
        user-select: none;
        transition: background 0.2s ease;
        width: 100%;
        background: none;
        border: none;
        text-align: left;
    }

    .module-accordion-header:hover {
        background: var(--bg-secondary);
    }

    .module-accordion-header h3 {
        margin: 0;
        font-size: 1.125rem;
        font-weight: 600;
        color: var(--text-color);
        flex: 1;
    }

    .module-accordion-toggle {
        width: 1.5rem;
        height: 1.5rem;
        color: var(--text-secondary);
        transition: transform 0.2s ease;
        flex-shrink: 0;
    }

    .module-accordion.expanded .module-accordion-toggle {
        transform: rotate(180deg);
    }

    .module-accordion-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .module-accordion.expanded .module-accordion-content {
        max-height: 2000px;
    }

    .module-accordion-body {
        padding: 0 1.5rem 1.5rem 1.5rem;
    }

    .course-content-container {
        display: grid;
        grid-template-columns: 280px 1fr;
        gap: 2rem;
        max-width: 1400px;
        margin: 0 auto;
        padding: 2rem 1.5rem;
    }

    .course-content-sidebar {
        background: var(--bg-secondary);
        box-shadow: var(--shadow-sm);
        padding: 1.5rem;
    }

    .course-content-sidebar-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 0.75rem;
        margin-bottom: 1rem;
    }

    .course-content-sidebar-header h3 {
        margin: 0;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-color);
        flex: 1;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .course-content-sidebar-header h3 svg {
        color: var(--text-muted);
    }

    .course-content-modules {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .module-card {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 0.875rem 1rem;
        background: var(--bg-secondary);
        border: 1px solid transparent;
        border-radius: 0.5rem;
        text-decoration: none;
        transition: all 0.15s ease;
    }

    .module-card:hover {
        background: var(--bg-tertiary);
        border-color: var(--border-color);
    }

    .module-card.active {
        background: var(--primary-color);
        border-color: var(--primary-color);
    }

    .module-card.active .module-card-icon,
    .module-card.active .module-card-title,
    .module-card.active .module-card-count,
    .module-card.active .module-card-arrow {
        color: white;
    }

    .module-card-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--bg-color);
        border-radius: 0.375rem;
        color: var(--primary-color);
        flex-shrink: 0;
    }

    .module-card.active .module-card-icon {
        background: rgba(255, 255, 255, 0.2);
    }

    .module-card-content {
        flex: 1;
        min-width: 0;
    }

    .module-card-title {
        display: block;
        font-size: 0.875rem;
        font-weight: 600;
        color: var(--text-color);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .module-card-count {
        display: block;
        font-size: 0.75rem;
        color: var(--text-muted);
        margin-top: 0.125rem;
    }

    .module-card-arrow {
        color: var(--text-muted);
        flex-shrink: 0;
        transition: transform 0.15s ease;
    }

    .module-card:hover .module-card-arrow {
        transform: translateX(2px);
    }

    .add-module-section {
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--border-color);
    }

    .course-content-module {
        border-bottom: 1px solid var(--border-light);
        transition: background-color 0.15s ease;
    }

    .course-content-module:last-child {
        border-bottom: none;
    }

    .course-content-module.active {
        background: rgba(79, 70, 229, 0.05);
        border-left: 3px solid var(--primary-color);
    }

    .course-content-module-header-wrapper {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .course-content-module-toggle {
        flex-shrink: 0;
    }

    .course-content-module.expanded .course-content-module-toggle svg {
        transform: rotate(180deg);
    }

    .course-content-module-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        padding-left: 0;
    }

    .course-content-module.expanded .course-content-module-content {
        max-height: 2000px;
        padding-left: 0;
    }

    .course-content-readings {
        padding: 0.5rem 0 0.5rem 1.5rem;
        margin-left: 1rem;
    }

    .module-empty-state {
        padding: 1rem 0.75rem 1rem 1.5rem;
        margin-left: 1rem;
    }

    .course-content-main {
        background: var(--bg-color);
        border: 1px solid var(--border-color);
        border-radius: 1rem;
        padding: 2rem;
        min-height: 400px;
    }

    .course-content-breadcrumb {
        margin-bottom: 1.5rem;
        color: var(--text-secondary);
        font-size: 0.875rem;
    }

    .course-content-breadcrumb a {
        color: var(--primary-color);
        text-decoration: none;
    }

    .course-content-breadcrumb a:hover {
        text-decoration: underline;
    }

    .breadcrumb-separator {
        margin: 0 0.375rem;
        color: var(--text-muted);
    }

    .course-content-reading-header {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }

    .course-content-reading-header h1 {
        margin: 0;
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-color);
    }

    .course-content-reading-header .btn {
        flex-shrink: 0;
    }

    .course-content-reading-view h1 {
        margin: 0 0 1.5rem 0;
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-color);
    }

    .reading-content {
        line-height: 1.7;
    }

    .reading-content h1,
    .reading-content h2,
    .reading-content h3,
    .reading-content h4 {
        margin-top: 2rem;
        margin-bottom: 1rem;
    }

    .reading-content p {
        margin-bottom: 1rem;
    }

    .reading-content pre {
        background: var(--bg-secondary);
        padding: 1rem;
        border-radius: 0.5rem;
        overflow-x: auto;
        margin: 1rem 0;
    }

    .reading-content code {
        background: var(--bg-secondary);
        padding: 0.125rem 0.375rem;
        border-radius: 0.25rem;
        font-size: 0.875em;
    }

    .reading-content pre code {
        background: none;
        padding: 0;
    }

    .reading-empty {
        text-align: center;
        padding: 3rem 2rem;
    }

    .course-content-overview {
        text-align: center;
        padding: 4rem 2rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 400px;
    }

    .course-content-overview svg {
        color: var(--text-muted);
        margin-bottom: 1.5rem;
    }

    .course-content-overview h1 {
        margin: 0 0 0.5rem 0;
        font-size: 1.5rem;
        font-weight: 600;
        color: var(--text-color);
    }

    .empty-state {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 2rem 1rem;
        text-align: center;
    }

    .empty-state svg {
        color: var(--text-muted);
        margin-bottom: 1rem;
    }

    .empty-state p {
        margin: 0 0 0.25rem 0;
        font-weight: 500;
        color: var(--text-color);
    }

    .course-content-navigation {
        display: flex;
        justify-content: space-between;
        margin-top: 3rem;
        padding-top: 2rem;
        border-top: 1px solid var(--border-color);
    }

    @media (max-width: 1024px) {
        .course-content-container {
            grid-template-columns: 1fr;
        }

        .course-content-sidebar {
            position: static;
            max-height: none;
        }
    }

    .course-view-summary {
        font-size: 0.9375rem;
    }

    .course-view-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .course-view-section {
        padding: 1.25rem;
    }

    .course-view-section-header h2 {
        font-size: 1.125rem;
    }

    .course-view-section-icon {
        width: 40px;
        height: 40px;
    }

    .course-view-instructor-card,
    .course-view-details-card {
        padding: 1.25rem;
    }
}

.course-navbar {
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 60px;
    z-index: 90;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.course-navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding-top: 0;
    padding-bottom: 0;
    min-height: 52px;
}

.course-navbar-title {
    flex-shrink: 1;
    min-width: 0;
}

.course-navbar-title a {
    display: block;
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-color);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 250px;
    transition: color 0.2s ease;
}

.course-navbar-title a:hover {
    color: var(--primary-color);
}

.course-navbar-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.course-navbar-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

.course-navbar-link:hover {
    color: var(--text-color);
    background: var(--bg-secondary);
}

.course-navbar-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.course-navbar-link svg {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .course-navbar .container {
        flex-wrap: wrap;
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
        gap: 0.5rem;
    }

    .course-navbar-title {
        order: 1;
        width: 100%;
    }

    .course-navbar-title a {
        max-width: 100%;
    }

    .course-navbar-links {
        order: 2;
        flex: 1;
    }

    .course-navbar-link {
        padding: 0.625rem 0.75rem;
        font-size: 0.8125rem;
    }
}

.course-content-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2.5rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.course-content-sidebar {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
}

.course-content-nav {
    display: block;
}

.course-content-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.course-content-sidebar-header h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.course-content-sidebar-header h3 svg {
    color: var(--text-muted);
}

.course-content-expand-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.course-content-expand-sep {
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 0 0.125rem;
}

.course-content-expand-btn {
    background: none;
    border: none;
    padding: 0.25rem 0.5rem;
    font-size: 0.8125rem;
    font-family: inherit;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 0.375rem;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.course-content-expand-btn:hover {
    color: var(--primary-color);
    background: rgba(79, 70, 229, 0.06);
}

.course-content-expand-btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.course-content-overview-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    margin-bottom: 0.5rem;
}

.course-content-overview-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-color);
}

.course-content-overview-link.active {
    background: var(--primary-color);
    color: white;
}

.course-content-overview-link:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.course-content-modules {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.course-content-module {
    border-bottom: 1px solid var(--border-light);
    border-left: 3px solid rgba(79, 70, 229, 0.15);
    padding: 1rem 0 1rem 0.5rem;
    margin-left: 0;
    transition: background-color 0.15s ease;
}

.course-content-module:last-of-type {
    border-bottom: none;
}

.course-content-module.active {
    background: rgba(79, 70, 229, 0.05);
    border-left-color: var(--primary-color);
}

.course-content-module-header-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.course-content-module-header-wrapper .module-card-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.module-card-title-link {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0;
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: color 0.15s ease;
}

.module-card-title-link:hover {
    color: var(--primary-color);
}

.module-card-title-link:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: 0.25rem;
}

.module-order {
    flex-shrink: 0;
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
}

.module-card-count {
    flex-shrink: 0;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.module-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 0.5rem;
}

.module-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.module-info .module-card-title-link {
    display: block;
    padding: 0;
}

.module-info .module-card-title {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.module-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.module-status-badge {
    font-size: 0.6875rem;
    font-weight: 500;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.module-status-draft {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
}

.module-status-published {
    background: rgba(34, 197, 94, 0.15);
    color: #15803d;
}

.module-actions-menu {
    position: relative;
    flex-shrink: 0;
}

.module-menu-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0.375rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.module-menu-trigger:hover {
    color: var(--text-color);
    background: rgba(0, 0, 0, 0.05);
}

.module-menu-trigger:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.module-menu-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.25rem;
    min-width: 140px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
}

.module-actions-menu.open .module-menu-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.module-menu-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: none;
    border: none;
    font-size: 0.875rem;
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.15s ease;
    text-align: left;
}

.module-menu-item:first-child {
    border-radius: 0.5rem 0.5rem 0 0;
}

.module-menu-item:last-child {
    border-radius: 0 0 0.5rem 0.5rem;
}

.module-menu-item:only-child {
    border-radius: 0.5rem;
}

.module-menu-item:hover {
    background: rgba(0, 0, 0, 0.04);
}

.module-menu-item.module-delete-btn {
    color: var(--danger-color, #dc2626);
}

.module-menu-item.module-delete-btn:hover {
    background: rgba(220, 38, 38, 0.08);
}

.module-menu-item svg {
    flex-shrink: 0;
}

.course-content-module-header-wrapper .publish-module-btn {
    flex-shrink: 0;
}

.course-content-module-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    min-width: 36px;
    height: 36px;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0.375rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.course-content-module-toggle:hover {
    color: var(--primary-color);
    background: rgba(79, 70, 229, 0.06);
}

.course-content-module-toggle:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.course-content-module-toggle svg {
    transition: transform 0.25s ease;
}

.course-content-module.expanded .course-content-module-toggle svg {
    transform: rotate(180deg);
}

.course-content-module-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    padding-left: 0;
}

.course-content-module.expanded .course-content-module-content {
    max-height: 2000px;
}

.course-content-readings {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem 0 0.5rem 2rem;
    border-left: 1px solid var(--border-light);
    margin-left: 1.25rem;
}

.course-content-reading-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.course-content-reading-row .course-content-reading {
    flex: 1;
    min-width: 0;
}

.course-content-reading-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-shrink: 0;
}

.course-content-reading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.course-content-reading:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.course-content-reading svg {
    flex-shrink: 0;
    opacity: 0.6;
}

.course-content-reading .reading-order {
    flex-shrink: 0;
    font-size: 0.75rem;
    color: var(--text-muted);
    min-width: 1.75rem;
}

.course-content-reading:hover {
    background: var(--bg-secondary);
    color: var(--text-color);
}

.course-content-reading:hover svg,
.course-content-reading:hover .reading-order {
    opacity: 1;
}

.course-content-reading.active {
    background: var(--primary-color);
    color: white;
    font-weight: 500;
}

.course-content-reading.active svg,
.course-content-reading.active .reading-order {
    opacity: 1;
    color: white;
}

.module-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem 0.75rem 1rem 2rem;
    margin-left: 1.25rem;
    border-left: 1px solid var(--border-light);
}

.module-empty-state-icon {
    flex-shrink: 0;
    color: var(--text-muted);
    opacity: 0.6;
    margin-bottom: 0.5rem;
}

.module-empty-state p {
    margin: 0 0 0.75rem 0;
    font-size: 0.8125rem;
}

.module-empty-state .btn {
    font-size: 0.8125rem;
    padding: 0.375rem 0.75rem;
}

.add-module-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.course-content-main {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2.5rem;
    min-height: 400px;
}

.course-content-overview {
    text-align: center;
    padding: 4rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.course-content-overview svg {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.course-content-overview h1 {
    margin: 0 0 0.5rem 0;
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-color);
}

.course-content-overview p {
    margin: 0;
    font-size: 1rem;
    color: var(--text-secondary);
}

.module-header {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0;
}

.module-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    padding: 0.375rem 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    min-width: 0;
}

.module-toggle:hover .module-title {
    color: var(--primary-color);
}

.module-toggle-icon {
    flex-shrink: 0;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.course-content-module.expanded .module-toggle-icon {
    transform: rotate(180deg);
}

.module-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.module-actions {
    display: flex;
    align-items: center;
    gap: 0.125rem;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.module-header:hover .module-actions {
    opacity: 1;
}

.module-header-actions {
    display: flex;
    align-items: center;
    gap: 0.125rem;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.module-header:hover .module-header-actions {
    opacity: 1;
}

.module-header-actions a.btn-icon-sm {
    opacity: 1;
    color: var(--text-muted);
    text-decoration: none;
}

.module-header-actions a.btn-icon-sm:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.module-header-actions .btn-icon-sm {
    opacity: 1;
}

.module-header-actions .btn-delete-module:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.module-empty-state {
    padding: 0.75rem 0.625rem;
    font-size: 0.8125rem;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.btn-icon:hover {
    background: var(--bg-tertiary);
    color: var(--text-color);
}

.btn-icon:hover svg {
    color: var(--primary-color);
}

.btn-delete-module:hover svg,
.btn-delete-content:hover svg {
    color: var(--danger-color);
}

.btn-icon-sm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.15s ease;
    flex-shrink: 0;
    opacity: 0;
}

.btn-icon-sm:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.module-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    padding-left: 1.5rem;
}

.course-content-module.expanded .module-content {
    max-height: 1000px;
}

.content-item {
    display: flex;
    align-items: center;
    position: relative;
    transition:
        opacity 0.2s ease,
        transform 0.2s ease;
}

.content-item:hover .btn-icon-sm {
    opacity: 1;
}

.content-item-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    padding: 0.5rem 0.625rem;
    margin: 0.125rem 0;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8125rem;
    border-radius: 0.375rem;
    transition: all 0.15s ease;
}

.content-item-link:hover {
    background: var(--bg-secondary);
    color: var(--text-color);
}

.content-item-link.active {
    background: var(--primary-color);
    color: white;
}

.content-item-link.active .content-item-icon {
    color: white;
}

.content-item-icon {
    flex-shrink: 0;
    color: var(--text-muted);
}

.content-item-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.inline-edit-form,
.add-module-form,
.add-content-form {
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    margin: 0.25rem 0;
}

.inline-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    background: var(--bg-color);
    font-family: inherit;
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.inline-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.inline-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.inline-input-sm {
    padding: 0.375rem 0.625rem;
    font-size: 0.8125rem;
}

.inline-textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    background: var(--bg-color);
    font-family: inherit;
    resize: vertical;
    margin-top: 0.5rem;
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.inline-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.inline-textarea::placeholder {
    color: var(--text-muted);
}

.inline-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.btn-ghost {
    background: transparent;
    border: none;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-tertiary);
    color: var(--text-color);
}

.btn-text {
    background: none;
    border: none;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: all 0.15s ease;
}

.btn-text:hover {
    background: var(--bg-tertiary);
}

.btn-text-danger {
    color: var(--danger-color);
}

.btn-text-danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.delete-confirm {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 0.5rem;
    margin: 0.25rem 0;
}

.delete-confirm-text {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--text-color);
}

.delete-confirm-actions {
    display: flex;
    gap: 0.5rem;
}

.delete-confirm-inline {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: auto;
    padding-right: 0.25rem;
}

.add-content-row {
    padding: 0.375rem 0;
}

.add-content-trigger {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem 0.625rem;
    background: none;
    border: 1px dashed var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s ease;
}

.add-content-trigger:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(79, 70, 229, 0.02);
}

.add-content-menu {
    display: flex;
    gap: 0.5rem;
    padding: 0.375rem 0;
}

.add-content-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-color);
    font-size: 0.8125rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s ease;
}

.add-content-option:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(79, 70, 229, 0.02);
}

.add-content-option svg {
    color: var(--text-muted);
}

.add-content-option:hover svg {
    color: var(--primary-color);
}

.add-content-form {
    flex-direction: column;
    padding: 0.625rem;
}

.add-module-row {
    padding: 0.75rem 0;
}

.add-module-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.625rem 1rem;
    background: none;
    border: 1px dashed var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s ease;
}

.add-module-trigger:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(79, 70, 229, 0.02);
}

.add-module-trigger:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.module-view-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.module-view-header {
    margin-bottom: 2rem;
}

.module-view-breadcrumb {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.module-view-breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.module-view-breadcrumb a:hover {
    text-decoration: underline;
}

.module-view-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.module-view-title-row h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
}

.module-view-description {
    margin: 1rem 0 0 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.module-view-content {
    margin-bottom: 2rem;
}

.module-view-readings {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.module-reading-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    transition: all 0.15s ease;
}

.module-reading-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.reading-card-link {
    display: flex;
    flex: 1;
    align-items: center;
    gap: 1rem;
    min-width: 0;
    text-decoration: none;
    color: inherit;
}

.reading-card-link:hover {
    color: inherit;
}

.reading-card-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.reading-card-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--bg-secondary);
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.reading-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.reading-card-content {
    flex: 1;
    min-width: 0;
}

.reading-card-content h3 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
}

.reading-card-type {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.reading-card-arrow {
    color: var(--text-muted);
    flex-shrink: 0;
    transition: transform 0.15s ease;
}

.module-reading-card:hover .reading-card-arrow {
    transform: translateX(4px);
    color: var(--primary-color);
}

.module-view-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    background: var(--bg-color);
    border: 1px dashed var(--border-color);
    border-radius: 0.75rem;
}

.module-view-empty svg {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.module-view-empty h2 {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.module-view-empty p {
    margin: 0 0 1.5rem 0;
}

.module-view-footer {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 0;
}

.about-content h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    text-align: center;
}

.about-content>.lead {
    font-size: 1.375rem;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.7;
    margin-bottom: 4rem;
    text-align: center;
}

.about-section {
    margin-bottom: 4rem;
}

.about-section h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.about-section p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.about-section p:last-child {
    margin-bottom: 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.value-item {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.value-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-color);
}

.value-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.value-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
    margin: 0;
}

.about-list {
    margin: 1.5rem 0;
    padding-left: 0;
    list-style: none;
    counter-reset: about-counter;
}

.about-list li {
    counter-increment: about-counter;
    padding: 1rem 0 1rem 3rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.0625rem;
    border-bottom: 1px solid var(--border-light);
}

.about-list li:last-child {
    border-bottom: none;
}

.about-list li::before {
    content: counter(about-counter);
    position: absolute;
    left: 0;
    top: 1rem;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.875rem;
}

.about-list li strong {
    color: var(--text-color);
    font-weight: 600;
}

.about-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 2.5rem;
}

@media (max-width: 900px) {
    .values-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 640px) {
    .about-content {
        padding: 2rem 0;
    }

    .about-content h1 {
        font-size: 2.25rem;
        margin-bottom: 1rem;
    }

    .about-content>.lead {
        font-size: 1.125rem;
        margin-bottom: 3rem;
    }

    .about-section {
        margin-bottom: 3rem;
    }

    .about-section h2 {
        font-size: 1.75rem;
        margin-bottom: 1.25rem;
    }

    .about-section p {
        font-size: 1rem;
    }

    .values-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .value-item {
        padding: 1.75rem;
    }

    .about-list li {
        padding-left: 2.5rem;
        font-size: 1rem;
    }

    .about-list li::before {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.8125rem;
    }

    .about-actions {
        flex-direction: column;
    }

    .about-actions .btn {
        width: 100%;
    }
}