* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

body {
    background: linear-gradient(180deg, #f8fafc 0%, #eef4ff 100%);
    color: #1d2430;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    background: rgba(15, 23, 42, 0.96);
    color: white;
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(8px);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-size: 1.4rem;
    font-weight: bold;
    letter-spacing: 0.03em;
}

.nav-links {
    display: flex;
    gap: 18px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    opacity: 0.85;
    transition: opacity 0.2s ease;
}

.nav-links a:hover {
    opacity: 1;
}

.user-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: white;
    padding: 8px 10px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 30px;
    padding: 80px 0 56px;
    align-items: center;
}

.hero h1 {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    margin-bottom: 16px;
    line-height: 1.1;
}

.hero p {
    font-size: 1.08rem;
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 620px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-card {
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
    padding: 28px;
    border-radius: 20px;
    box-shadow: 0 14px 32px rgba(37, 99, 235, 0.12);
    border: 1px solid #dbeafe;
}

.hero-points {
    list-style: none;
    margin-top: 18px;
    display: grid;
    gap: 10px;
}

.hero-points li {
    position: relative;
    padding-left: 20px;
}

.hero-points li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #2563eb;
    font-size: 1.2rem;
}

.hero-card h3 {
    margin-bottom: 10px;
}

.btn {
    display: inline-block;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    padding: 12px 20px;
    border-radius: 10px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.25);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 0.85rem;
    border-radius: 8px;
}

.btn.secondary {
    background: #e2e8f0;
    color: #0f172a;
    box-shadow: none;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 22px rgba(37, 99, 235, 0.28);
}

.btn.secondary:hover {
    box-shadow: 0 12px 22px rgba(96, 165, 250, 0.28);
}

.progress-summary,
.dashboard-progress {
    display: grid;
    gap: 8px;
    margin-top: 14px;
}

.progress-track {
    width: 100%;
    height: 9px;
    overflow: hidden;
    background: #e2e8f0;
    border-radius: 999px;
}

.progress-value {
    height: 100%;
    background: #16a34a;
    border-radius: inherit;
    transition: width 0.2s ease;
}

.completion-status {
    display: inline-block;
    margin-top: 14px;
    color: #15803d;
    font-weight: 600;
}

.lesson-editor {
    display: grid;
    gap: 12px;
    margin: 18px 0;
    padding: 14px;
    background: #f1f5f9;
    border: 1px solid #dbe3ed;
    border-radius: 12px;
}

.lesson-editor-heading h3 {
    margin-bottom: 4px;
    color: #172554;
}

.lesson-editor-heading p {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.5;
}

.tutor-calendar-page {
    max-width: 1320px;
    padding-top: 34px;
    padding-bottom: 56px;
}

.tutor-calendar-nav .nav-links {
    flex-wrap: wrap;
    justify-content: flex-end;
    row-gap: 10px;
}

.tutor-calendar-hero {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
    margin: 0 0 24px;
    padding: 30px 32px;
    color: #ffffff;
    background: linear-gradient(120deg, #102a43 0%, #17466a 58%, #2563a6 100%);
    border-radius: 18px;
    box-shadow: 0 16px 35px rgba(15, 42, 67, 0.16);
}

.tutor-calendar-hero-copy {
    max-width: 650px;
}

.tutor-calendar-eyebrow,
.tutor-calendar-section-eyebrow {
    display: block;
    margin-bottom: 8px;
    color: #93c5fd;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.tutor-calendar-hero h1 {
    margin-bottom: 8px;
    color: #ffffff;
    font-size: clamp(1.9rem, 4vw, 2.6rem);
    letter-spacing: -0.035em;
}

.tutor-calendar-hero p {
    color: #dbeafe;
    line-height: 1.6;
}

.tutor-calendar-hero-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    flex-wrap: wrap;
}

.tutor-calendar-hero-actions .btn {
    white-space: nowrap;
}

.tutor-calendar-private-badge {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 12px;
    border: 1px solid rgba(219, 234, 254, 0.3);
    border-radius: 999px;
    color: #eff6ff;
    background: rgba(15, 23, 42, 0.18);
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.tutor-calendar-overview {
    display: grid;
    grid-template-columns: minmax(180px, 0.75fr) minmax(280px, 1.25fr);
    gap: 16px;
    margin-bottom: 20px;
}

.tutor-calendar-overview-card {
    display: flex;
    min-height: 112px;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 18px 22px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    box-shadow: 0 5px 18px rgba(15, 23, 42, 0.04);
}

.tutor-calendar-overview-card > span {
    color: #64748b;
    font-size: 0.82rem;
    font-weight: 600;
}

.tutor-calendar-overview-card > strong {
    color: #0f2942;
    font-size: 1.45rem;
    line-height: 1.25;
}

.tutor-calendar-overview-card > small {
    color: #64748b;
    font-size: 0.82rem;
}

.admin-tutor-calendar-filter {
    margin: 0 0 20px;
    padding: 20px 22px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    box-shadow: 0 5px 18px rgba(15, 23, 42, 0.04);
}

.admin-tutor-calendar-filter form {
    display: grid;
    grid-template-columns: minmax(160px, 0.45fr) minmax(220px, 1fr) auto;
    align-items: end;
    gap: 12px;
}

.admin-tutor-calendar-filter label {
    grid-column: 1 / -1;
    color: #334155;
    font-size: 0.85rem;
    font-weight: 700;
}

.admin-tutor-calendar-filter select {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 9px;
    color: #1e293b;
    background: #ffffff;
    font: inherit;
}

.admin-tutor-calendar-filter select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.14);
}

.admin-tutor-calendar-filter .btn {
    min-height: 44px;
    white-space: nowrap;
}

.admin-tutor-calendar-message {
    margin-top: 20px;
}

.admin-tutor-calendar-privacy {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid #e2e8f0;
    color: #64748b;
    font-size: 0.78rem;
    line-height: 1.5;
}

.tutor-calendar-panel,
.tutor-calendar-form,
.tutor-calendar-list {
    margin: 20px 0;
    padding: 24px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.045);
}

.tutor-calendar-panel {
    max-width: 1040px;
    margin-inline: auto;
}

.tutor-calendar-heading,
.tutor-calendar-form-heading,
.tutor-calendar-list-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.tutor-calendar-form-heading {
    cursor: pointer;
    list-style: none;
}

.tutor-calendar-form-heading::-webkit-details-marker {
    display: none;
}

.tutor-calendar-form:not([open]) .tutor-calendar-form-heading {
    margin-bottom: 0;
}

.tutor-calendar-form-heading::after {
    content: "+";
    flex: 0 0 auto;
    color: #2563eb;
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1;
}

.tutor-calendar-form[open] .tutor-calendar-form-heading::after {
    content: "−";
}

.tutor-calendar-form-heading:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 5px;
    border-radius: 4px;
}

.tutor-calendar-heading h2,
.tutor-calendar-form-heading h2,
.tutor-calendar-list-heading h2 {
    color: #102a43;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.tutor-calendar-heading .tutor-calendar-section-eyebrow,
.tutor-calendar-form-heading .tutor-calendar-section-eyebrow,
.tutor-calendar-list-heading .tutor-calendar-section-eyebrow {
    margin-bottom: 5px;
    color: #64748b;
}

.tutor-calendar-month-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tutor-calendar-month-actions .btn {
    display: inline-flex;
    width: 38px;
    height: 38px;
    justify-content: center;
    align-items: center;
    padding: 0;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    color: #334155;
    background: #ffffff;
    font-size: 1.35rem;
    line-height: 1;
}

.tutor-calendar-today {
    padding: 9px 12px;
    border: 1px solid #bfdbfe;
    border-radius: 9px;
    color: #1d4ed8;
    background: #eff6ff;
    font-size: 0.82rem;
    font-weight: 700;
    text-decoration: none;
}

.tutor-calendar-grid-scroll {
    overflow-x: auto;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    scrollbar-color: #94a3b8 #f1f5f9;
}

.tutor-calendar-mobile-note {
    display: none;
}

.tutor-calendar-grid {
    display: grid;
    min-width: 700px;
    grid-template-columns: repeat(7, minmax(0, 1fr));
}

.tutor-calendar-weekday {
    padding: 11px 8px;
    color: #64748b;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-align: center;
    text-transform: uppercase;
}

.tutor-calendar-day {
    display: flex;
    min-width: 0;
    min-height: 94px;
    flex-direction: column;
    gap: 5px;
    padding: 6px;
    border-right: 1px solid #edf1f5;
    border-bottom: 1px solid #edf1f5;
    background: #ffffff;
}

.tutor-calendar-day:nth-child(7n) {
    border-right: 0;
}

.tutor-calendar-day:nth-last-child(-n + 7) {
    border-bottom: 0;
}

.tutor-calendar-day > strong {
    display: grid;
    width: 28px;
    height: 28px;
    place-items: center;
    color: #334155;
    border-radius: 50%;
    font-size: 0.82rem;
}

.tutor-calendar-day.is-outside-month {
    background: #fafbfc;
}

.tutor-calendar-day.is-outside-month > strong {
    color: #a0aec0;
}

.tutor-calendar-day.is-today {
    background: #f5f9ff;
}

.tutor-calendar-day.is-today > strong {
    color: #ffffff;
    background: #2563eb;
}

.tutor-calendar-event {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 2px;
    padding: 6px 7px;
    border-left: 3px solid #2563eb;
    border-radius: 5px;
    color: #1e3a5f;
    background: #eff6ff;
    font-size: 0.72rem;
    line-height: 1.3;
    overflow-wrap: anywhere;
    text-decoration: none;
}

.tutor-calendar-event:hover {
    filter: brightness(0.97);
}

.tutor-calendar-event span {
    font-size: 0.66rem;
    font-weight: 700;
}

.tutor-calendar-event strong {
    font-weight: 600;
}

.tutor-calendar-event.status-svolta,
.tutor-calendar-status.status-svolta {
    border-color: #16a34a;
    color: #166534;
    background: #f0fdf4;
}

.tutor-calendar-event.status-annullata,
.tutor-calendar-status.status-annullata {
    border-color: #dc2626;
    color: #991b1b;
    background: #fef2f2;
}

.tutor-calendar-event.status-da_preparare,
.tutor-calendar-status.status-da_preparare {
    border-color: #d97706;
    color: #92400e;
    background: #fffbeb;
}

.tutor-calendar-event.status-programmata,
.tutor-calendar-status.status-programmata {
    border-color: #2563eb;
    color: #1e40af;
    background: #eff6ff;
}

.tutor-calendar-legend {
    display: flex;
    gap: 12px 20px;
    flex-wrap: wrap;
    margin-top: 16px;
    color: #64748b;
    font-size: 0.78rem;
}

.tutor-calendar-legend > span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.status-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #2563eb;
}

.status-dot.status-da_preparare {
    background: #d97706;
}

.status-dot.status-programmata {
    background: #2563eb;
}

.status-dot.status-svolta {
    background: #16a34a;
}

.status-dot.status-annullata {
    background: #dc2626;
}

.tutor-calendar-form-private-note {
    max-width: 240px;
    padding: 9px 12px;
    border-radius: 9px;
    color: #475569;
    background: #f1f5f9;
    font-size: 0.78rem;
    line-height: 1.45;
}

.tutor-calendar-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.tutor-calendar-fields label {
    display: grid;
    align-content: start;
    gap: 7px;
    color: #334155;
    font-size: 0.85rem;
    font-weight: 700;
}

.tutor-calendar-fields label small {
    color: #64748b;
    font-size: 0.76rem;
    font-weight: 400;
    line-height: 1.45;
}

.tutor-calendar-fields input,
.tutor-calendar-fields select,
.tutor-calendar-fields textarea {
    width: 100%;
    min-height: 43px;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 9px;
    color: #1e293b;
    background: #ffffff;
    font: inherit;
    font-size: 0.9rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.tutor-calendar-fields input:focus,
.tutor-calendar-fields select:focus,
.tutor-calendar-fields textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.14);
}

.tutor-calendar-fields textarea {
    min-height: 120px;
    resize: vertical;
}

.tutor-calendar-wide {
    grid-column: 1 / -1;
}

.tutor-calendar-actions {
    display: flex;
    align-items: center;
    gap: 9px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.tutor-calendar-actions form {
    margin: 0;
}

.tutor-calendar-actions .btn {
    min-height: 40px;
}

.tutor-calendar-list-heading {
    margin-bottom: 8px;
}

.tutor-calendar-count {
    padding: 6px 10px;
    border-radius: 999px;
    color: #475569;
    background: #f1f5f9;
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
}

.tutor-calendar-empty {
    margin-top: 16px;
    padding: 24px;
    border: 1px dashed #cbd5e1;
    border-radius: 12px;
    text-align: center;
}

.tutor-calendar-empty strong {
    color: #334155;
}

.tutor-calendar-empty p {
    margin-top: 6px;
    color: #64748b;
    font-size: 0.85rem;
}

.tutor-calendar-list-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid #edf1f5;
}

.tutor-calendar-list-item:last-child {
    border-bottom: 0;
}

.tutor-calendar-list-date {
    display: flex;
    width: 54px;
    min-width: 54px;
    height: 58px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 1px solid #dbeafe;
    border-radius: 11px;
    color: #1d4ed8;
    background: #eff6ff;
}

.tutor-calendar-list-date strong {
    font-size: 1.2rem;
    line-height: 1.1;
}

.tutor-calendar-list-date span {
    margin-top: 2px;
    font-size: 0.7rem;
    text-transform: uppercase;
}

.tutor-calendar-list-content {
    display: grid;
    flex: 1;
    min-width: 0;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 4px 14px;
}

.tutor-calendar-list-content > strong {
    color: #1e293b;
    overflow-wrap: anywhere;
}

.tutor-calendar-list-content p,
.tutor-calendar-list-content small {
    grid-column: 1;
    color: #64748b;
    line-height: 1.45;
}

.tutor-calendar-list-content p:empty {
    display: none;
}

.tutor-calendar-list-content small {
    font-size: 0.76rem;
}

.tutor-calendar-status {
    display: inline-flex;
    width: fit-content;
    grid-column: 2;
    grid-row: 1 / span 3;
    padding: 5px 9px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    white-space: nowrap;
}

@media (max-width: 800px) {
    .tutor-calendar-nav {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .tutor-calendar-nav .nav-links {
        justify-content: flex-start;
    }

    .tutor-calendar-hero {
        align-items: flex-start;
        flex-direction: column;
        padding: 24px;
    }

    .tutor-calendar-hero-actions {
        justify-content: flex-start;
    }
}

@media (max-width: 600px) {
    .tutor-calendar-page {
        padding-top: 20px;
        padding-bottom: 36px;
    }

    .tutor-calendar-hero {
        gap: 18px;
        padding: 22px 18px;
        border-radius: 14px;
    }

    .tutor-calendar-hero-actions {
        align-items: flex-start;
        flex-direction: column;
    }

    .tutor-calendar-overview {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .admin-tutor-calendar-filter {
        padding: 16px;
    }

    .admin-tutor-calendar-filter form {
        grid-template-columns: 1fr;
    }

    .admin-tutor-calendar-filter label {
        grid-column: 1;
    }

    .tutor-calendar-overview-card {
        min-height: 92px;
        padding: 15px 18px;
    }

    .tutor-calendar-panel,
    .tutor-calendar-form,
    .tutor-calendar-list {
        margin: 14px 0;
        padding: 17px 14px;
        border-radius: 13px;
    }

    .tutor-calendar-heading,
    .tutor-calendar-form-heading {
        align-items: flex-start;
    }

    .tutor-calendar-month-actions {
        gap: 5px;
    }

    .tutor-calendar-month-actions .btn {
        width: 34px;
        height: 34px;
    }

    .tutor-calendar-grid-scroll,
    .tutor-calendar-legend {
        display: none;
    }

    .tutor-calendar-mobile-note {
        display: block;
        margin-top: 12px;
        padding: 12px;
        border: 1px solid #bfdbfe;
        border-radius: 10px;
        color: #334155;
        background: #eff6ff;
        font-size: 0.85rem;
        line-height: 1.5;
    }

    .tutor-calendar-mobile-note a {
        color: #1d4ed8;
        font-weight: 700;
    }

    .tutor-calendar-list {
        scroll-margin-top: 16px;
    }

    .tutor-calendar-form-heading {
        flex-direction: column;
    }

    .tutor-calendar-form-private-note {
        max-width: none;
    }

    .tutor-calendar-fields {
        grid-template-columns: 1fr;
        gap: 13px;
    }

    .tutor-calendar-wide {
        grid-column: auto;
    }

    .tutor-calendar-list-content {
        grid-template-columns: 1fr;
    }

    .tutor-calendar-status {
        grid-column: 1;
        grid-row: auto;
    }

    .tutor-calendar-list-item {
        align-items: flex-start;
        gap: 12px;
    }

    .tutor-calendar-list-item > .tutor-calendar-actions {
        margin-top: 0;
    }
}

.module-collaborator-notice {
    margin: 12px 0;
    padding: 10px 12px;
    color: #1e3a5f;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    font-size: 0.88rem;
}

.lesson-module-groups {
    display: grid;
    gap: 10px;
}

.lesson-module-card {
    position: relative;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.04);
}

.lesson-module-card::before {
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    background: #2563eb;
    content: "";
}

.lesson-module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 10px 12px 10px 17px;
    background: #eff6ff;
    border-bottom: 1px solid #d5deea;
}

.lesson-module-details {
    flex: 1;
    min-width: 0;
}

.lesson-module-summary {
    display: flex;
    align-items: center;
    gap: 10px;
    width: fit-content;
    cursor: pointer;
    list-style: none;
}

.lesson-module-summary::-webkit-details-marker {
    display: none;
}

.lesson-module-summary::before {
    color: #2563eb;
    content: "+";
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1;
}

.lesson-module-details[open] > .lesson-module-summary::before {
    content: "−";
}

.lesson-module-summary:focus-visible {
    border-radius: 4px;
    outline: 2px solid #2563eb;
    outline-offset: 3px;
}

.lesson-module-title {
    color: #1e3a5f;
    font-size: 0.98rem;
    font-weight: 700;
}

.lesson-module-count {
    color: #64748b;
    font-size: 0.78rem;
}

.lesson-module-lessons {
    display: grid;
    gap: 8px;
    padding: 10px;
}

.lesson-module-details:not([open]) > .lesson-module-content {
    display: none;
}

.module-tutor-panel {
    display: grid;
    gap: 7px;
    margin: 0 10px 10px;
    padding: 10px 12px;
    border: 1px solid #dbe3ed;
    border-radius: 8px;
}

.module-tutor-panel legend {
    padding: 0 5px;
    color: #1e3a5f;
    font-size: 0.84rem;
    font-weight: 700;
}

.module-tutor-description,
.module-tutor-empty {
    color: #64748b;
    font-size: 0.8rem;
    line-height: 1.4;
}

.module-tutor-options {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.module-tutor-option {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    max-width: 100%;
    padding: 6px 9px;
    color: #334155;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 7px;
    font-size: 0.8rem;
    overflow-wrap: anywhere;
}

.module-tutor-option input {
    flex: 0 0 auto;
    margin: 0;
    accent-color: #2563eb;
}

.module-upload-panel {
    display: grid;
    gap: 8px;
    margin: 0 10px 10px;
    padding: 12px;
    background: #f8fafc;
    border: 1px solid #dbe3ed;
    border-radius: 8px;
}

.module-upload-heading h5 {
    margin-bottom: 3px;
    color: #1e3a5f;
    font-size: 0.88rem;
}

.module-upload-heading p,
.module-existing-files-empty {
    color: #64748b;
    font-size: 0.8rem;
    line-height: 1.4;
}

.module-upload-label {
    color: #334155;
    font-size: 0.82rem;
    font-weight: 600;
}

.module-file-input {
    width: 100%;
    min-width: 0;
    padding: 8px;
    background: #ffffff;
    border: 1px dashed #93c5fd;
    border-radius: 8px;
}

.module-existing-files {
    display: grid;
    gap: 6px;
    padding-top: 8px;
    border-top: 1px solid #e2e8f0;
}

.module-existing-files-heading {
    color: #475569;
    font-size: 0.8rem;
    font-weight: 600;
}

.module-existing-files .checkbox-row {
    margin-bottom: 0;
    padding: 7px 9px;
    font-size: 0.8rem;
    overflow-wrap: anywhere;
}

.lesson-module-empty {
    padding: 6px 4px;
    color: #64748b;
    font-size: 0.85rem;
}

.lesson-editor-row {
    display: grid;
    grid-template-columns: 82px 92px minmax(120px, 0.8fr) minmax(180px, 1.5fr) 130px;
    gap: 8px 10px;
    align-items: start;
    padding: 10px 12px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
}

.lesson-row-heading {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    min-width: 0;
    padding-bottom: 7px;
    border-bottom: 1px solid #e2e8f0;
}

.lesson-number {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 3px 8px;
    color: #1d4ed8;
    background: #dbeafe;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    white-space: nowrap;
}

.lesson-title-preview {
    overflow: hidden;
    color: #1e293b;
    font-size: 0.88rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lesson-type-preview {
    padding: 3px 7px;
    color: #475569;
    background: #e2e8f0;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    white-space: nowrap;
}

.lesson-editor-row > input[type="hidden"] {
    display: none;
}

.lesson-editor-row > label {
    display: grid;
    gap: 4px;
    color: #334155;
    font-size: 0.8rem;
    font-weight: 600;
}

.lesson-editor-row input,
.lesson-editor-row select,
.lesson-editor-row textarea {
    width: 100%;
    min-width: 0;
}

.lesson-field-title input {
    font-weight: 600;
}

.lesson-extra-fields {
    grid-column: 1 / -1;
    padding: 9px 11px;
    background: #ffffff;
    border: 1px solid #dbe3ed;
    border-radius: 8px;
}

.lesson-extra-fields summary {
    color: #1d4ed8;
    cursor: pointer;
    font-size: 0.84rem;
    font-weight: 700;
}

.lesson-extra-fields[open] summary {
    margin-bottom: 10px;
}

.lesson-extra-fields-content {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.lesson-extra-fields-content > label {
    display: grid;
    gap: 6px;
    color: #334155;
    font-size: 0.85rem;
    font-weight: 600;
}

.lesson-content-editor {
    grid-column: 1 / -1;
    display: grid;
    gap: 6px;
}

.lesson-content-editor > strong {
    color: #334155;
    font-size: 0.85rem;
    font-weight: 600;
}

.quill-ready .lesson-content-source {
    display: none;
}

.lesson-rich-editor {
    background: #fff;
    color: #1d2430;
}

.lesson-rich-editor .ql-editor {
    min-height: 160px;
    font-family: Arial, sans-serif;
}

.lesson-content-editor > small {
    color: #64748b;
    font-size: 0.78rem;
}

.lesson-content {
    line-height: 1.65;
}

.lesson-content > * + * {
    margin-top: 0.7em;
}

.lesson-content ul,
.lesson-content ol {
    padding-left: 1.6em;
}

.lesson-content blockquote {
    padding-left: 1em;
    border-left: 3px solid #94a3b8;
    color: #475569;
}

.lesson-quiz-editor {
    grid-column: 1 / -1;
    display: grid;
    gap: 8px;
    padding: 10px;
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
}

.lesson-quiz-editor > strong {
    color: #334155;
}

.quiz-question-block {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    padding: 9px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
}

.quiz-question-header {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quiz-question-header strong {
    color: #334155;
}

.lesson-location {
    display: block;
    margin-bottom: 6px;
    color: #64748b;
    font-weight: 600;
}

.student-notes {
    display: grid;
    gap: 18px;
    max-width: 900px;
    margin: 28px auto;
}

.student-notes-panel {
    display: grid;
    gap: 14px;
    padding: 24px;
    background: #ffffff;
    border: 1px solid #dbe2ea;
    border-radius: 8px;
}

.student-notes label {
    display: grid;
    gap: 8px;
    font-weight: 600;
}

.student-notes select,
.student-notes textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    color: #1d2430;
    font: inherit;
}

.student-notes textarea {
    min-height: 190px;
    resize: vertical;
    line-height: 1.6;
}

.student-notes textarea[data-note-section="tutor_explanation"] {
    min-height: 260px;
}

.student-notes-message {
    padding: 12px 14px;
    background: #ecfdf5;
    border: 1px solid #bbf7d0;
    border-radius: 6px;
    color: #166534;
}

.student-notes-error {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.student-notes-status[data-state="saving"],
.student-notes-status[data-state="pending"] {
    background: #eff6ff;
    border-color: #bfdbfe;
    color: #1e40af;
}

.student-notes-status[data-state="offline"] {
    background: #fff7ed;
    border-color: #fed7aa;
    color: #9a3412;
}

.student-materials {
    margin-top: 8px;
}

.student-materials-heading,
.student-material-item,
.student-material-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.student-materials-heading h2 {
    margin-bottom: 6px;
}

.student-materials-heading p,
.student-materials-empty {
    color: #64748b;
    line-height: 1.5;
}

.student-materials-count {
    flex: 0 0 auto;
    color: #475569;
    font-size: 0.9rem;
    font-weight: 600;
}

.student-material-upload {
    display: grid;
    grid-template-columns: minmax(180px, 1fr) minmax(220px, 2fr) auto;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
}

.student-material-upload label {
    font-weight: 600;
}

.student-material-upload input[type="file"] {
    min-width: 0;
    width: 100%;
    color: #475569;
}

.student-material-list {
    display: grid;
    gap: 8px;
    list-style: none;
}

.student-material-item {
    padding: 12px 14px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
}

.student-material-info {
    display: grid;
    gap: 4px;
    min-width: 0;
}

.student-material-info strong {
    overflow-wrap: anywhere;
}

.student-material-info span {
    color: #64748b;
    font-size: 0.85rem;
}

.student-material-actions form {
    margin: 0;
}

@media (max-width: 700px) {
    .student-material-upload {
        grid-template-columns: 1fr;
    }

    .student-material-upload .btn {
        width: 100%;
    }

    .student-material-item {
        align-items: flex-start;
        flex-direction: column;
    }

    .student-material-actions {
        width: 100%;
    }
}

@media (max-width: 800px) {
    .lesson-editor-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .lesson-module-header {
        align-items: flex-start;
    }

    .lesson-extra-fields-content,
    .quiz-question-block {
        grid-template-columns: 1fr;
    }

    .quiz-question-header {
        grid-column: auto;
    }
}

@media (max-width: 520px) {
    .lesson-editor {
        padding: 10px;
    }

    .lesson-module-header {
        flex-wrap: wrap;
        gap: 8px;
        padding: 9px 10px 9px 14px;
    }

    .lesson-module-details {
        flex-basis: 100%;
    }

    .lesson-module-header .btn {
        width: auto;
        margin-left: auto;
    }

    .lesson-module-lessons {
        gap: 7px;
        padding: 8px;
    }

    .lesson-editor-row {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        padding: 9px;
    }

    .lesson-row-heading {
        grid-template-columns: auto minmax(0, 1fr);
        gap: 8px;
    }

    .lesson-type-preview {
        grid-column: 2;
        justify-self: start;
    }

    .lesson-field-unit,
    .lesson-field-title,
    .lesson-field-type,
    .lesson-extra-fields,
    .lesson-editor-row > .btn {
        grid-column: 1 / -1;
    }
}

.btn-block {
    display: block;
    width: 100%;
    margin-top: 12px;
    text-align: center;
}

.features,
.course-grid,
.stats-grid,
.portal-grid,
.steps-grid {
    display: grid;
    gap: 24px;
}

.testing-panel {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    padding: 24px;
    margin: 20px 0 30px;
}

.testing-panel h2 {
    margin-bottom: 20px;
}

.test-steps {
    list-style: decimal;
    padding-left: 22px;
    display: grid;
    gap: 16px;
}

.test-steps li {
    line-height: 1.6;
}

.test-steps p {
    margin-top: 6px;
}

.features {
    grid-template-columns: repeat(3, 1fr);
    margin-bottom: 40px;
}

.stats-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 0 0 40px;
}

.stat-pill {
    background: white;
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 16px;
    padding: 22px 18px;
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.04);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.stat-pill strong {
    font-size: 1.5rem;
    color: #0f172a;
}

.portal-section {
    margin: 30px 0 40px;
}

.section-heading {
    margin-bottom: 18px;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.72rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 8px;
}

.portal-grid {
    grid-template-columns: repeat(3, 1fr);
}

.portal-card,
.step-card {
    background: white;
    border-radius: 18px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
    padding: 24px;
}

.portal-card h3,
.step-card h3 {
    margin: 12px 0 8px;
}

.steps-grid {
    grid-template-columns: repeat(3, 1fr);
}

.step-card span {
    display: inline-flex;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: #dbeafe;
    color: #1d4ed8;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.card,
.course-card,
.stat-box,
.auth-box,
.hero-card {
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.course-grid {
    grid-template-columns: repeat(3, 1fr);
    margin-top: 30px;
}

.courses-table-wrapper {
    margin-top: 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    border: 1px solid rgba(148, 163, 184, 0.18);
    overflow-x: auto;
}

.courses-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 900px;
}

.courses-table th,
.courses-table td {
    padding: 18px 20px;
    border-bottom: 1px solid #e2e8f0;
    text-align: left;
    vertical-align: top;
}

.courses-table th {
    background: #f8fafc;
    color: #0f172a;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.courses-table tbody tr:last-child td {
    border-bottom: none;
}

.courses-table tbody tr:hover {
    background: #f8fafc;
}

.table-course-title {
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 6px;
}

.table-course-description {
    color: #475569;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-top: 4px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 7px 11px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: capitalize;
    white-space: nowrap;
}

.status-attivo,
.status-active {
    background: #dcfce7;
    color: #166534;
}

.status-in-attesa,
.status-pending {
    background: #fef3c7;
    color: #92400e;
}

.status-archiviato,
.status-archived {
    background: #e2e8f0;
    color: #334155;
}

.status-emessa {
    background: #dbeafe;
    color: #1d4ed8;
}

.status-non-emessa {
    background: #f1f5f9;
    color: #475569;
}

.status-bozza {
    background: #e2e8f0;
    color: #475569;
}

.status-in_revisione {
    background: #fef3c7;
    color: #92400e;
}

.status-pubblicato {
    background: #dcfce7;
    color: #166534;
}

.status-archiviato {
    background: #fee2e2;
    color: #991b1b;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
}

.modal-backdrop.hidden {
    display: none;
}

.modal-content {
    background: white;
    border-radius: 18px;
    width: min(760px, 100%);
    max-height: 85vh;
    overflow-y: auto;
    padding: 24px;
    box-shadow: 0 25px 50px rgba(15, 23, 42, 0.2);
    position: relative;
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    border: none;
    background: #e2e8f0;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.3rem;
    line-height: 1;
}

.modal-user-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid #e2e8f0;
}

.modal-label {
    color: #64748b;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.modal-role-badge {
    display: inline-flex;
    align-items: center;
    background: #dbeafe;
    color: #1d4ed8;
    border-radius: 999px;
    padding: 7px 10px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: capitalize;
}

.modal-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.modal-field {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 12px 14px;
}

.modal-field span {
    display: block;
    color: #64748b;
    font-size: 0.8rem;
    margin-bottom: 4px;
}

.modal-field strong {
    color: #0f172a;
    word-break: break-word;
}

.catalog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-top: 30px;
    margin-bottom: 20px;
}

.catalog-title {
    margin: 0 0 4px;
}

.catalog-count {
    color: #64748b;
    margin: 0;
}

.view-switcher {
    display: inline-flex;
    gap: 4px;
    padding: 4px;
    background: #e2e8f0;
    border-radius: 10px;
}

.view-switch {
    border: 0;
    border-radius: 7px;
    background: transparent;
    color: #475569;
    cursor: pointer;
    font: inherit;
    font-size: 0.9rem;
    padding: 9px 13px;
}

.view-switch.active {
    background: white;
    color: #1d4ed8;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
}

.filter-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    display: inline-block;
    background: #e2e8f0;
    color: #0f172a;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 999px;
}

.filter-btn.active {
    background: #2563eb;
    color: white;
}

.course-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.course-card-main {
    flex: 1;
}

.course-card-content {
    min-width: 0;
}

.catalog-view-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.catalog-view-list .course-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 24px;
    align-items: center;
    padding: 18px 22px;
}

.catalog-view-list .course-card-main {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 20px;
    align-items: center;
}

.catalog-view-list .course-poster {
    width: 150px;
    height: 90px;
    margin: 0;
}

.catalog-view-list .category {
    margin-bottom: 7px;
}

.catalog-view-list .course-card h3 {
    margin-bottom: 6px;
}

.catalog-view-list .course-card p {
    margin: 0;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}

.catalog-view-list .course-meta {
    grid-column: 2;
    grid-row: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 5px;
    margin: 0;
    white-space: nowrap;
}

.catalog-view-list .course-actions {
    grid-column: 3;
    grid-row: 1;
    align-self: end;
    justify-content: flex-end;
}

.course-poster {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 18px;
}

.course-poster-detail {
    display: block;
    width: min(100%, 720px);
    max-height: 420px;
    object-fit: contain;
    margin: 0 auto 24px;
    border-radius: 12px;
}

.course-poster-thumb {
    display: block;
    width: 140px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 12px;
}

.stats-grid {
    grid-template-columns: repeat(2, 1fr);
    margin: 20px 0 40px;
}

.card,
.course-card,
.stat-box,
.auth-box,
.hero-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

.card,
.course-card,
.stat-box,
.auth-box {
    padding: 24px;
}

.card h3,
.course-card h3,
.stat-box h3 {
    margin-bottom: 10px;
}

.card,
.course-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover,
.course-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 30px rgba(15, 23, 42, 0.08);
}

.page {
    padding: 40px 0 60px;
}

.page-intro {
    margin-bottom: 20px;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
}

.admin-header-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.admin-user-search {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.admin-user-search input {
    min-width: 260px;
}

.admin-user-search select {
    min-width: 280px;
}

.table-wrap {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 18px;
    background: white;
}

.data-table th,
.data-table td {
    border-bottom: 1px solid #e2e8f0;
    padding: 12px 14px;
    text-align: left;
    vertical-align: top;
}

.data-table th {
    background: #f8fafc;
    color: #334155;
    font-size: 0.85rem;
}

.data-table td:last-child {
    min-width: 280px;
    word-break: break-word;
}

.page-intro h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.admin-primary-btn {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
    box-shadow: 0 10px 22px rgba(22, 163, 74, 0.25);
}

.category {
    display: inline-block;
    background: #dbeafe;
    color: #1d4ed8;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 18px 0 10px;
}

.course-subscribers {
    color: #475569;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.course-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.admin-list {
    display: grid;
    gap: 18px;
}

.admin-course-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 18px;
}

.admin-course-item p {
    margin: 8px 0;
}

.admin-course-video {
    display: grid;
    gap: 6px;
    margin-top: 12px;
    max-width: 480px;
}

.admin-course-video video {
    display: block;
    width: 100%;
    max-height: 270px;
    background: #111827;
}

.admin-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

#module-upload-wrapper {
    display: grid;
    gap: 12px;
    margin-top: 8px;
}

.upload-field {
    background: linear-gradient(180deg, #f8fbff 0%, #f1f5f9 100%);
    border: 1px solid #bfdbfe;
    border-radius: 14px;
    padding: 16px;
    margin-top: 10px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.upload-field > label {
    display: block;
    font-size: 0.94rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 10px;
}

.upload-field input[type="file"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px dashed #93c5fd;
    border-radius: 10px;
    background: white;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    margin-bottom: 8px;
    padding: 10px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    background: white;
    color: #0f172a;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.checkbox-row:hover {
    border-color: #93c5fd;
    background: #f0f9ff;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.08);
}

.checkbox-row:last-child {
    margin-bottom: 0;
}

.checkbox-row input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #2563eb;
    margin: 0;
}

.admin-form-actions {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.btn.secondary {
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    box-shadow: 0 8px 18px rgba(59, 130, 246, 0.22);
}

.btn.danger {
    background: #dc2626;
}

.course-detail {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    padding: 24px;
}

.course-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 20px;
}

.course-detail-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.lead {
    font-size: 1.05rem;
    line-height: 1.7;
}

.module-box {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    padding: 24px;
    margin-top: 24px;
}

.live-class-notice {
    color: #854d0e;
}

.jitsi-meeting {
    width: 100%;
    height: clamp(420px, 75vh, 820px);
    margin-top: 16px;
    overflow: hidden;
    border-radius: 12px;
}

@media (max-width: 640px) {
    .jitsi-meeting {
        height: clamp(360px, 68vh, 600px);
    }
}

.lesson-item {
    border-top: 1px solid #e2e8f0;
    padding-top: 16px;
    margin-top: 16px;
}

.lesson-item h3 {
    margin-bottom: 8px;
}

.written-assignments-page {
    max-width: 1000px;
}

.written-assignment-panel {
    margin: 20px 0;
    padding: 22px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.045);
}

.written-assignment-panel h2,
.written-assignment-panel h3 {
    margin-bottom: 14px;
    color: #102a43;
}

.written-assignment-create-form,
.written-review-form {
    display: grid;
    gap: 14px;
}

.written-assignment-create-form label,
.written-review-form label,
.written-assignment-editor-form > label {
    display: grid;
    gap: 7px;
    color: #334155;
    font-weight: 600;
}

.written-assignment-create-form input,
.written-assignment-create-form textarea,
.written-review-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font: inherit;
}

.written-assignment-list {
    display: grid;
    gap: 10px;
    padding: 0;
    list-style: none;
}

.written-assignment-list a {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 14px;
    border: 1px solid #e2e8f0;
    border-radius: 9px;
    color: #1e3a5f;
    text-decoration: none;
}

.written-assignment-list a:hover {
    background: #f8fafc;
}

.written-assignment-deadline,
.written-submission small {
    color: #64748b;
    font-size: 0.85rem;
}

.written-assignment-prompt {
    margin: 12px 0 22px;
    padding: 16px;
    border-left: 3px solid #2563eb;
    border-radius: 6px;
    background: #f8fafc;
    line-height: 1.65;
}

.written-assignment-editor-form {
    display: grid;
    gap: 12px;
}

.written-content-editor {
    color: #1d2430;
    background: #ffffff;
}

.written-content-editor .ql-editor {
    min-height: 300px;
    font: inherit;
}

.quill-ready .written-content-source {
    display: none;
}

.written-editor-footer,
.written-submission-heading {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: #64748b;
    font-size: 0.85rem;
}

.written-assignment-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.written-assignment-warning {
    margin: 0;
    color: #64748b;
    font-size: 0.85rem;
}

.written-submissions {
    display: grid;
    gap: 14px;
}

.written-submission {
    display: grid;
    gap: 12px;
    padding: 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
}

.written-submission-content,
.written-feedback {
    line-height: 1.65;
    overflow-wrap: anywhere;
}

.written-submission-content > * + * {
    margin-top: 0.65em;
}

.written-feedback {
    margin: 16px 0;
    padding: 16px;
    border-left: 3px solid #16a34a;
    border-radius: 6px;
    background: #f0fdf4;
}

.written-feedback h3 {
    margin-bottom: 8px;
}

@media (max-width: 640px) {
    .written-assignment-panel {
        padding: 16px;
    }

    .written-assignment-list a {
        flex-direction: column;
        gap: 5px;
    }
}

.lesson-video {
    display: block;
    width: 100%;
    max-width: 900px;
    margin: 16px auto;
    border-radius: 8px;
    background: #000;
}

.quiz-question {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e2e8f0;
}

.quiz-question label {
    display: block;
    margin-top: 10px;
}

textarea {
    width: 100%;
    min-height: 120px;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    margin-bottom: 8px;
}

.auth-page {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding-top: 50px;
}

.profile-layout {
    align-items: start;
}

.auth-box form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.auth-box input {
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    margin-bottom: 8px;
}

.alert {
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.alert.success {
    background: #dcfce7;
    color: #166534;
}

.alert.error {
    background: #fee2e2;
    color: #991b1b;
}

.forum-page {
    max-width: 1040px;
}

.forum-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 28px;
    padding: 34px 38px;
    margin-bottom: 24px;
    border: 1px solid #dbeafe;
    border-radius: 20px;
    background: linear-gradient(120deg, #eff6ff 0%, #ffffff 72%);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.08);
}

.forum-heading h1 {
    margin: 5px 0 10px;
    color: #172554;
    font-size: clamp(2rem, 4vw, 2.7rem);
    letter-spacing: -0.04em;
}

.forum-heading > div:first-child > p {
    max-width: 590px;
    color: #475569;
    line-height: 1.65;
}

.forum-eyebrow {
    color: #2563eb;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.13em;
}

.forum-stats {
    display: flex;
    gap: 12px;
    flex: 0 0 auto;
}

.forum-stat {
    min-width: 96px;
    padding: 13px 16px;
    border: 1px solid #dbeafe;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.86);
    text-align: center;
}

.forum-stat strong,
.forum-stat span {
    display: block;
}

.forum-stat strong {
    color: #1d4ed8;
    font-size: 1.35rem;
}

.forum-stat span {
    margin-top: 2px;
    color: #64748b;
    font-size: 0.78rem;
}

.forum-compose,
.forum-discussion,
.forum-empty-state {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    margin-bottom: 24px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.045);
}

.forum-compose {
    overflow: hidden;
    border-color: #bfdbfe;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.06);
}

.forum-compose summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 19px 22px;
    cursor: pointer;
    list-style: none;
}

.forum-compose summary::-webkit-details-marker {
    display: none;
}

.forum-compose summary > span:first-child {
    display: grid;
    gap: 4px;
}

.forum-compose summary strong {
    color: #172554;
    font-size: 1.05rem;
}

.forum-compose summary small {
    color: #64748b;
    font-size: 0.88rem;
}

.forum-compose-action {
    padding: 9px 14px;
    border-radius: 9px;
    background: #2563eb;
    color: white;
    font-size: 0.86rem;
    font-weight: 700;
    white-space: nowrap;
}

.forum-compose[open] summary {
    border-bottom: 1px solid #e2e8f0;
}

.forum-compose form {
    display: grid;
    gap: 10px;
    padding: 22px;
}

.forum-compose input,
.forum-compose textarea,
.forum-reply-form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    background: #fff;
    color: #1d2430;
    font: inherit;
    line-height: 1.5;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.forum-compose input:focus,
.forum-compose textarea:focus,
.forum-reply-form textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.16);
}

.forum-compose textarea,
.forum-reply-form textarea {
    resize: vertical;
}

.forum-field-hint,
.forum-discussion-meta {
    color: #64748b;
    font-size: 0.9rem;
}

.forum-compose-footer,
.forum-reply-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.forum-compose-footer .btn,
.forum-reply-actions .btn {
    flex: 0 0 auto;
}

.forum-search {
    display: grid;
    grid-template-columns: minmax(180px, 0.65fr) minmax(0, 1.35fr);
    align-items: center;
    gap: 18px;
    padding: 16px 18px;
    margin: 28px 0 30px;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.035);
}

.forum-search label {
    display: block;
    margin: 0;
    color: #334155;
    font-size: 0.92rem;
    font-weight: 700;
}

.forum-search-controls {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
}

.forum-search-controls::before {
    position: absolute;
    left: 15px;
    top: 50%;
    width: 12px;
    height: 12px;
    border: 2px solid #94a3b8;
    border-radius: 50%;
    content: "";
    pointer-events: none;
    transform: translateY(-60%);
}

.forum-search-controls::after {
    position: absolute;
    left: 28px;
    top: calc(50% + 6px);
    width: 6px;
    height: 2px;
    border-radius: 2px;
    background: #94a3b8;
    content: "";
    pointer-events: none;
    transform: rotate(45deg);
    transform-origin: left center;
}

.forum-search-controls input {
    width: 100%;
    min-width: 0;
    padding: 11px 14px 11px 42px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    background: #fff;
    color: #1d2430;
    font: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.forum-search-controls input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.16);
}

.forum-search-clear {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 4px;
    color: #475569;
    font-size: 0.88rem;
    font-weight: 600;
    white-space: nowrap;
}

.forum-search-clear:hover {
    color: #1d4ed8;
}

.forum-search-clear:focus-visible {
    outline: 3px solid #60a5fa;
    outline-offset: 2px;
    border-radius: 4px;
}

.forum-section-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
    margin: 34px 0 16px;
}

.forum-section-heading h2 {
    margin-top: 4px;
    color: #172554;
    font-size: 1.55rem;
    letter-spacing: -0.025em;
}

.forum-list-count {
    padding: 6px 10px;
    border-radius: 999px;
    background: #f1f5f9;
    color: #475569;
    font-size: 0.82rem;
    font-weight: 600;
}

.forum-discussion {
    padding: 0;
    overflow: hidden;
    scroll-margin-top: 24px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.forum-discussion:target {
    border-color: #93c5fd;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.forum-thread-summary {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto 14px;
    align-items: center;
    gap: 14px;
    min-height: 86px;
    padding: 18px 22px;
    cursor: pointer;
    list-style: none;
}

.forum-thread-summary::-webkit-details-marker {
    display: none;
}

.forum-thread-summary:focus-visible {
    outline: 3px solid #60a5fa;
    outline-offset: -3px;
}

.forum-thread-summary:hover {
    background: #f8fbff;
}

.forum-thread[open] .forum-thread-summary {
    border-bottom: 1px solid #e2e8f0;
    background: #f8fbff;
}

.forum-thread-title {
    display: grid;
    min-width: 0;
    gap: 6px;
}

.forum-thread-title > strong {
    overflow: hidden;
    color: #172554;
    font-size: 1rem;
    line-height: 1.4;
    text-overflow: ellipsis;
}

.forum-thread-title .forum-discussion-meta {
    font-size: 0.82rem;
}

.forum-thread-preview {
    display: grid;
    gap: 3px;
    min-width: 0;
    color: #64748b;
    font-size: 0.78rem;
    line-height: 1.4;
}

.forum-thread-preview > span:first-child {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

.forum-thread-preview strong {
    color: #475569;
    font-weight: 700;
}

.forum-thread-preview-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.forum-thread-replies {
    padding: 6px 10px;
    border-radius: 999px;
    background: #eff6ff;
    color: #1d4ed8;
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
}

.forum-thread-chevron {
    width: 9px;
    height: 9px;
    border-right: 2px solid #64748b;
    border-bottom: 2px solid #64748b;
    transform: rotate(45deg) translateY(-2px);
    transition: transform 0.18s ease;
}

.forum-thread[open] .forum-thread-chevron {
    transform: rotate(225deg) translate(-2px, -1px);
}

.forum-thread-content {
    padding: 20px 26px 24px;
}

.forum-moderation-form {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.forum-delete-button {
    padding: 7px 10px;
    border: 1px solid #fecaca;
    border-radius: 8px;
    background: #fff;
    color: #b91c1c;
    cursor: pointer;
    font: inherit;
    font-size: 0.8rem;
    font-weight: 700;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.forum-delete-button:hover {
    border-color: #fca5a5;
    background: #fef2f2;
}

.forum-delete-button:focus-visible {
    outline: 3px solid rgba(239, 68, 68, 0.3);
    outline-offset: 2px;
}

.forum-discussion-heading {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.forum-topic-mark {
    position: relative;
    display: block;
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    border-radius: 13px;
    background: #eff6ff;
}

.forum-topic-mark::before,
.forum-topic-mark::after {
    position: absolute;
    content: "";
    border: 2px solid #3b82f6;
    border-radius: 5px;
}

.forum-topic-mark::before {
    inset: 11px 10px 12px 11px;
}

.forum-topic-mark::after {
    inset: 15px 7px 8px 15px;
    background: #eff6ff;
}

.forum-discussion h3 {
    margin: 1px 0 7px;
    color: #172554;
    font-size: 1.18rem;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.forum-discussion-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px;
    margin: 0;
    font-size: 0.84rem;
}

.forum-discussion-meta strong {
    color: #334155;
}

.forum-discussion-message {
    margin-top: 19px;
    color: #334155;
    line-height: 1.75;
    overflow-wrap: anywhere;
    white-space: normal;
}

.forum-empty-state {
    padding: 42px 24px;
    text-align: center;
}

.forum-empty-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: 14px;
    border-radius: 16px;
    background: #eff6ff;
    color: #2563eb;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.forum-empty-state h3 {
    margin-bottom: 8px;
    color: #172554;
}

.forum-empty-state p {
    max-width: 480px;
    margin: 0 auto;
    color: #64748b;
    line-height: 1.6;
}

.forum-replies {
    margin-top: 20px;
    padding: 18px 0 0 18px;
    border-top: 1px solid #e2e8f0;
    border-left: 2px solid #dbeafe;
}

.forum-replies h4 {
    margin-bottom: 12px;
    color: #334155;
    font-size: 0.9rem;
}

.forum-reply {
    padding: 14px 16px;
    margin-bottom: 10px;
    border: 1px solid #edf2f7;
    border-radius: 12px;
    background: #f8fafc;
}

.forum-reply-form {
    display: grid;
    gap: 9px;
    margin: 18px 0 0 18px;
}

.forum-reply-form label,
.forum-compose label {
    color: #334155;
    font-size: 0.9rem;
    font-weight: 700;
}

.forum-reply-actions .forum-field-hint,
.forum-compose-footer .forum-field-hint {
    margin: 0;
    font-size: 0.82rem;
}

.forum-page .alert {
    margin-bottom: 16px;
}

.forum-page button:focus-visible,
.forum-page summary:focus-visible {
    outline: 3px solid #60a5fa;
    outline-offset: 3px;
}

@media (max-width: 900px) {
    .hero,
    .features,
    .course-grid,
    .stats-grid,
    .portal-grid,
    .steps-grid,
    .stats-strip,
    .auth-page {
        grid-template-columns: 1fr;
    }

    .catalog-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .catalog-view-list .course-card {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .catalog-view-list .course-meta,
    .catalog-view-list .course-actions {
        grid-column: 1;
        grid-row: auto;
    }

    .catalog-view-list .course-meta {
        align-items: flex-start;
        white-space: normal;
    }

    .forum-heading {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 560px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .site-header {
        padding: 14px 0;
    }

    .nav {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .nav-links {
        gap: 10px 14px;
        flex-wrap: wrap;
    }

    .hero {
        padding: 48px 0 36px;
    }

    .hero-card {
        padding: 20px;
    }

    .hero-actions .btn {
        flex: 1 1 100%;
        text-align: center;
    }

    .forum-heading {
        gap: 20px;
        padding: 25px 21px;
        border-radius: 16px;
    }

    .forum-stats {
        width: 100%;
    }

    .forum-stat {
        flex: 1;
    }

    .forum-compose summary {
        align-items: flex-start;
        padding: 17px;
    }

    .forum-compose-action {
        padding: 8px 10px;
        font-size: 0.78rem;
    }

    .forum-compose form {
        padding: 18px 17px;
    }

    .forum-compose-footer,
    .forum-reply-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .forum-compose-footer .btn,
    .forum-reply-actions .btn {
        width: 100%;
        text-align: center;
    }

    .forum-section-heading {
        align-items: flex-start;
    }

    .forum-search {
        grid-template-columns: 1fr;
        gap: 9px;
    }

    .forum-search-controls {
        flex-wrap: wrap;
    }

    .forum-search-controls input {
        flex-basis: 100%;
    }

    .forum-search-controls .btn {
        flex: 1;
        text-align: center;
    }

    .forum-discussion {
        padding: 0;
    }

    .forum-thread-summary {
        grid-template-columns: 36px minmax(0, 1fr) 12px;
        gap: 11px;
        padding: 16px 14px;
    }

    .forum-topic-mark {
        width: 36px;
        height: 36px;
        flex-basis: 36px;
    }

    .forum-topic-mark::before {
        inset: 9px 9px 10px 9px;
    }

    .forum-topic-mark::after {
        inset: 13px 6px 7px 13px;
    }

    .forum-thread-replies {
        grid-column: 2;
        justify-self: start;
        padding: 4px 8px;
    }

    .forum-thread-chevron {
        grid-column: 3;
        grid-row: 1;
    }

    .forum-thread-content {
        padding: 16px 15px 19px;
    }

    .forum-replies {
        padding-left: 12px;
    }

    .forum-reply-form {
        margin-left: 12px;
    }

    .catalog-header {
        gap: 14px;
    }

    .filter-list {
        gap: 8px;
    }

    .catalog-view-list .course-card {
        padding: 16px;
    }

    .catalog-view-list .course-card-main {
        grid-template-columns: 1fr;
    }

    .catalog-view-list .course-poster {
        width: 100%;
        height: auto;
        max-height: 180px;
    }

    .home-course-list .course-meta {
        gap: 8px;
        margin: 0;
    }

    .home-course-list .course-subscribers {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin: 0;
    }

    .catalog-view-list .course-actions .btn {
        width: 100%;
        text-align: center;
    }
}

.home-page {
    background: #f8fafc;
}

.home-page .home-hero {
    display: block;
    max-width: 780px;
    padding: 68px 0 50px;
}

.home-page .home-hero h1 {
    max-width: 680px;
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    letter-spacing: -0.035em;
}

.home-page .home-hero p {
    color: #475569;
    font-size: 1.1rem;
}

.home-page .hero-actions {
    align-items: center;
    gap: 20px;
}

.home-page .hero-actions .btn {
    background: #1d4ed8;
    border-radius: 8px;
    box-shadow: none;
}

.home-page .hero-actions .btn:hover {
    background: #1e40af;
    box-shadow: none;
}

.home-secondary-link {
    color: #334155;
    font-weight: 600;
    text-decoration: none;
}

.home-secondary-link:hover {
    color: #1d4ed8;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.home-page .home-catalog .catalog-header {
    align-items: flex-end;
    margin-top: 0;
    margin-bottom: 18px;
}

.home-catalog .catalog-header h2 {
    margin-bottom: 6px;
    font-size: 1.65rem;
    letter-spacing: -0.02em;
}

.home-catalog-intro {
    color: #64748b;
    font-size: 0.94rem;
    line-height: 1.5;
    margin: 0;
}

.home-page .home-catalog {
    scroll-margin-top: 90px;
}

.home-page .filter-list {
    gap: 8px;
    justify-content: flex-end;
}

.home-page .filter-btn {
    background: white;
    border: 1px solid #e2e8f0;
    color: #475569;
    padding: 7px 12px;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.home-page .filter-btn:hover {
    border-color: #93c5fd;
    color: #1d4ed8;
}

.home-page .filter-btn.active {
    background: #1d4ed8;
    border-color: #1d4ed8;
    color: white;
}

.home-page .home-course-list {
    gap: 12px;
    margin-top: 0;
}

.home-page .home-course-list .course-card {
    grid-template-columns: minmax(0, 1fr) minmax(150px, auto) auto;
    gap: 22px;
    padding: 18px 20px;
    border-color: #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.home-page .home-course-list .course-card:hover {
    border-color: #cbd5e1;
    box-shadow: 0 5px 16px rgba(15, 23, 42, 0.07);
}

.home-page .home-course-list .course-card-main {
    min-width: 0;
}

.home-page .home-course-list .course-poster {
    height: 90px;
    object-fit: cover;
    border-radius: 8px;
}

.home-page .home-course-list .course-card h3 {
    margin-bottom: 6px;
    font-size: 1.1rem;
    line-height: 1.35;
}

.home-page .home-course-list .course-card p {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-height: 1.5;
}

.home-page .home-course-list .course-no-poster {
    grid-template-columns: minmax(0, 1fr);
}

.home-page .home-course-list .category {
    margin-bottom: 8px;
}

.home-page .home-course-list .course-meta {
    grid-column: 2;
    grid-row: 1;
    align-items: flex-end;
    gap: 6px;
    margin: 0;
    text-align: right;
}

.home-course-teacher {
    color: #64748b;
    font-size: 0.9rem;
}

.home-page .home-course-list .course-actions {
    grid-column: 3;
    grid-row: 1;
}

.home-page .home-course-list .course-actions .btn {
    border-radius: 8px;
    box-shadow: none;
    white-space: nowrap;
}

.home-page a:focus-visible {
    outline: 3px solid #60a5fa;
    outline-offset: 3px;
}

.site-footer {
    margin-top: 32px;
    border-top: 1px solid #e2e8f0;
    color: #64748b;
    font-size: 0.875rem;
}

.home-page .site-footer {
    margin-top: 80px;
}

.site-footer .container {
    padding-top: 18px;
    padding-bottom: 18px;
}

.site-footer p {
    margin: 0;
}

@media (max-width: 900px) {
    .home-page .home-hero {
        padding: 56px 0 44px;
    }

    .home-page .home-catalog .catalog-header {
        align-items: flex-start;
    }

    .home-page .filter-list {
        justify-content: flex-start;
    }

    .home-page .home-course-list .course-card {
        grid-template-columns: minmax(0, 1fr) auto;
    }

    .home-page .home-course-list .course-meta {
        grid-column: 1;
        grid-row: 2;
        align-items: flex-start;
        text-align: left;
    }

    .home-page .home-course-list .course-actions {
        grid-column: 2;
        grid-row: 2;
        align-self: center;
    }
}

@media (max-width: 560px) {
    .home-page .home-hero {
        padding: 44px 0 36px;
    }

    .home-page .hero-actions {
        align-items: flex-start;
        flex-direction: column;
        gap: 14px;
    }

    .home-page .home-catalog .catalog-header {
        align-items: flex-start;
    }

    .home-page .home-course-list .course-card {
        grid-template-columns: minmax(0, 1fr);
        gap: 14px;
        padding: 16px;
    }

    .home-page .home-course-list .course-poster {
        width: 100%;
        height: auto;
        max-height: 180px;
        aspect-ratio: 16 / 9;
    }

    .home-page .home-course-list .course-card-main,
    .home-page .home-course-list .course-meta,
    .home-page .home-course-list .course-actions {
        grid-column: 1;
        grid-row: auto;
    }

    .home-page .home-course-list .course-actions .btn {
        width: 100%;
    }
}

.grouped-nav {
    flex: 1 1 700px;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 12px 18px;
    min-width: 0;
}

.grouped-nav-section {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 7px;
    padding-left: 16px;
    border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.grouped-nav-section:first-child {
    padding-left: 0;
    border-left: 0;
}

.grouped-nav-label {
    color: rgba(255, 255, 255, 0.58);
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    line-height: 1;
    text-transform: uppercase;
}

.grouped-nav-items {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 12px;
}

.grouped-nav-items a[aria-current="page"] {
    font-weight: 700;
    opacity: 1;
    text-decoration: underline;
    text-underline-offset: 5px;
}

@media (max-width: 560px) {
    .grouped-nav {
        width: 100%;
        flex: 1 1 auto;
        align-items: stretch;
        justify-content: flex-start;
        gap: 12px;
    }

    .grouped-nav-section,
    .grouped-nav-section:first-child {
        width: 100%;
        gap: 8px;
        padding: 10px 0 0;
        border-top: 1px solid rgba(255, 255, 255, 0.2);
        border-left: 0;
    }

    .grouped-nav-section:first-child {
        padding-top: 0;
        border-top: 0;
    }

    .grouped-nav-items {
        gap: 4px 14px;
    }

    .grouped-nav-items a {
        display: inline-flex;
        min-height: 36px;
        align-items: center;
    }
}