:root {
    --bg: #f3f6f9;
    --surface: #ffffff;
    --surface-muted: #f9fafb;
    --sidebar: #0f172a;
    --sidebar-muted: #94a3b8;
    --border: #e5e7eb;
    --text: #111827;
    --muted: #6b7280;
    --primary: #0f766e;
    --primary-dark: #0b5f58;
    --danger: #ef4444;
    --success: #166534;
    --radius: 12px;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    --sidebar-width: 260px;
    --header-height: 88px;
}

body {
    overflow-x: hidden;
}

.admin-main,
.main-content,
.content-wrapper,
.page-content {
    padding-top: 0 !important;
    margin-top: 0 !important;
    position: relative !important;
}

.page-container {
    padding-top: 0 !important;
    margin-top: 16px !important;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.page-header {
    margin-bottom: 20px !important;
    position: relative !important;
    z-index: 1;
}

.stats-grid,
.dashboard-grid {
    margin-top: 32px !important;
    padding-top: 0 !important;
    position: relative !important;
    transform: none !important;
}

.stat-card,
.dashboard-card,
.content-card {
    position: relative !important;
    top: auto !important;
    transform: none !important;
}

.app-header,
.topbar,
.header {
    position: relative !important;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Instrument Sans", "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--bg);
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

h1 {
    margin: 0;
    font-size: 32px;
    font-weight: 700;
    line-height: 1.15;
}

h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    line-height: 1.2;
}

p {
    margin: 0;
    color: var(--muted);
}

.admin-auth-page {
    display: grid;
    place-items: center;
    min-height: 100vh;
    padding: 24px;
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.16), transparent 35%),
        radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 24%),
        var(--bg);
}

.auth-shell {
    width: min(100%, 460px);
}

.auth-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 36px;
}

.auth-card--narrow {
    width: min(100%, 430px);
}

.auth-card__header h1,
.admin-sidebar__brand h2 {
    margin: 0;
}

.auth-card__header p {
    margin-top: 12px;
    line-height: 1.6;
}

.auth-badge,
.eyebrow {
    display: inline-flex;
    align-items: center;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 11px;
    font-weight: 700;
}

.auth-badge {
    margin-bottom: 14px;
    color: var(--primary);
    background: rgba(15, 118, 110, 0.1);
    border-radius: 999px;
    padding: 8px 12px;
}

.auth-form,
.form-grid {
    display: grid;
    gap: 18px;
}

.auth-form {
    margin-top: 28px;
}

.field {
    display: grid;
    gap: 10px;
}

.field span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

.field input,
.field select,
.field textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    color: var(--text);
    padding: 12px 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field textarea {
    min-height: 180px;
    resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: none;
    border-color: rgba(15, 118, 110, 0.55);
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
}

.password-field {
    position: relative;
}

.password-field input {
    padding-right: 76px;
}

.password-toggle {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    border: 0;
    background: transparent;
    color: var(--primary);
    font-weight: 600;
    cursor: pointer;
}

.auth-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.checkbox {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
}

.checkbox input {
    width: 16px;
    height: 16px;
}

.checkbox--card {
    width: fit-content;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface-muted);
}

.text-link {
    color: var(--primary-dark);
    font-weight: 600;
}

.text-link--inline {
    display: inline-block;
    margin-top: 22px;
}

.btn {
    display: inline-block;
    padding: 10px 16px;
    border: 1px solid transparent;
    border-radius: 8px;
    font-weight: 500;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
    opacity: 0.94;
}

.btn:disabled {
    cursor: wait;
    opacity: 0.72;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    white-space: nowrap;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary,
.btn-ghost {
    background: #e5e7eb;
    color: #111827;
    border-color: #e5e7eb;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 14px;
}

.btn-block {
    width: 100%;
    text-align: center;
}

.fit-content {
    width: fit-content;
}

.is-disabled {
    pointer-events: none;
    opacity: 0.5;
}

.alert {
    display: grid;
    gap: 6px;
    border-radius: 10px;
    padding: 14px 16px;
    font-size: 14px;
}

.alert-error {
    color: #991b1b;
    background: #fef2f2;
    border: 1px solid #fecaca;
}

.alert-success {
    color: #166534;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
}

.admin-shell {
    min-height: 100vh;
    background: var(--bg);
}

.admin-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    overflow-y: auto;
    padding: 28px 18px;
    background: var(--sidebar);
    color: #e2e8f0;
    z-index: 30;
}

.admin-sidebar__brand {
    padding: 8px 10px 24px;
}

.admin-nav {
    display: grid;
    gap: 6px;
}

.admin-nav__link {
    display: block;
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--sidebar-muted);
    font-size: 15px;
    font-weight: 500;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.admin-nav__link:hover,
.admin-nav__link.is-active {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.admin-main {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    overflow: visible;
}

.admin-header {
    position: relative;
    top: 0;
    left: auto;
    right: auto;
    width: 100%;
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 32px;
    background: rgba(243, 246, 249, 0.95);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(8px);
    z-index: 20;
}

.admin-header__actions {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: flex-end;
}

.admin-user__label,
.eyebrow,
.page-copy,
.table-summary,
.status-list span,
.auth-card__header p {
    color: var(--muted);
}

.sidebar-toggle {
    display: none;
    border: 0;
    background: rgba(15, 118, 110, 0.12);
    color: var(--primary-dark);
    border-radius: 8px;
    padding: 10px 14px;
    font-weight: 600;
}

.user-menu {
    position: relative;
}

.user-menu__trigger {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 44px;
    padding: 4px 8px 4px 4px;
    border: 1px solid transparent;
    border-radius: 999px;
    background: transparent;
    color: var(--text);
    cursor: pointer;
}

.user-menu__trigger:hover,
.user-menu.is-open .user-menu__trigger {
    background: rgba(255, 255, 255, 0.72);
    border-color: var(--border);
}

.user-menu__avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.user-menu__meta {
    display: grid;
    gap: 2px;
    text-align: left;
}

.user-menu__meta strong {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

.user-menu__caret {
    color: var(--muted);
    font-size: 12px;
}

.user-menu__dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 210px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
    z-index: 40;
}

.user-menu__item {
    display: flex;
    width: 100%;
    align-items: center;
    padding: 10px 12px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
    text-align: left;
}

.user-menu__item:hover {
    background: var(--surface-muted);
}

.user-menu__item--button {
    cursor: pointer;
}

.admin-content {
    padding-top: 0;
    padding-bottom: 32px;
    overflow: visible;
}

.main-content {
    padding-top: 0;
    overflow: visible;
}

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

.section {
    margin-bottom: 24px;
}

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

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.header-left {
    min-width: 0;
}

.header-right {
    flex-shrink: 0;
}

.breadcrumb-text {
    margin-bottom: 4px;
    color: #9ca3af;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.page-header h1 {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
}

.page-header p {
    margin-top: 6px;
    color: #6b7280;
}

.page-copy {
    margin-top: 10px;
    max-width: 760px;
    line-height: 1.6;
}

.card,
.content-card,
.panel,
.stat-card,
.action-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(229, 231, 235, 0.8);
}

.content-card {
    overflow: visible;
}

.filter-card {
    margin-bottom: 20px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface-muted);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    align-items: end;
}

[data-chapter-selection].contents {
    display: contents;
}

.form-group {
    display: grid;
    gap: 8px;
}

.form-group span {
    font-size: 13px;
    font-weight: 600;
    color: var(--muted);
}

.form-group input,
.form-group select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    color: var(--text);
    padding: 10px 12px;
}

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

.chapter-contents-filter-card {
    margin-bottom: 28px;
    padding: 24px;
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.05);
}

.chapter-contents-filter-card__header {
    margin-bottom: 18px;
}

.chapter-contents-filter-card__header h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.chapter-contents-filter-form {
    display: grid;
    gap: 18px;
}

.chapter-contents-filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    align-items: start;
}

[data-chapter-selection].chapter-contents-filter-grid {
    display: contents;
}

.chapter-contents-filter-field {
    gap: 9px;
}

.chapter-contents-filter-field span {
    font-size: 13px;
    font-weight: 700;
    color: #475569;
}

.chapter-contents-filter-field input,
.chapter-contents-filter-field select {
    min-height: 46px;
    border: 1px solid #d7dee7;
    border-radius: 12px;
    background: #fff;
    padding: 12px 14px;
    font-size: 14px;
    line-height: 1.4;
    color: var(--text);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.02);
}

.chapter-contents-filter-field input::placeholder {
    color: #94a3b8;
}

.chapter-contents-filter-field input:focus,
.chapter-contents-filter-field select:focus {
    border-color: rgba(15, 118, 110, 0.48);
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
}

.chapter-contents-filter-actions {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.chapter-contents-filter-actions .btn {
    min-width: 112px;
}

.stats-grid,
.panel-grid,
.action-grid {
    display: grid;
    gap: 20px;
}

.stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    margin-top: 24px;
}

.dashboard-grid {
    display: grid;
    gap: 20px;
    margin-top: 24px;
    overflow: visible;
}

.stat-card__label {
    color: var(--muted);
    font-size: 14px;
}

.stat-card__value {
    display: block;
    margin-top: 12px;
    font-size: 28px;
    font-weight: 700;
}

.panel-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
}

.panel-grid--single {
    grid-template-columns: 1fr;
}

.panel__header {
    margin-bottom: 16px;
}

.panel__header--split,
.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.status-list {
    display: grid;
    gap: 12px;
}

.status-list div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 10px;
    background: var(--surface-muted);
}

.action-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.action-grid--stacked {
    grid-template-columns: 1fr;
}

.action-card {
    display: flex;
    align-items: center;
    min-height: 80px;
    font-weight: 600;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.table,
.data-table,
.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td,
.data-table th,
.data-table td,
.admin-table th,
.admin-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
    vertical-align: middle;
}

.table th,
.data-table th,
.admin-table th {
    font-size: 14px;
    font-weight: 600;
    color: #6b7280;
}

.table tbody tr:hover,
.data-table tbody tr:hover,
.admin-table tbody tr:hover {
    background: #f9fafb;
}

.actions-column {
    width: 1%;
    white-space: nowrap;
}

.table-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    text-decoration: none;
    cursor: pointer;
    font-size: 16px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.icon-btn.edit {
    background: #eef2ff;
    color: #3730a3;
}

.icon-btn.view {
    background: #ecfeff;
    color: #155e75;
}

.icon-btn.delete {
    background: #fee2e2;
    color: #991b1b;
}

.icon-btn:hover {
    transform: translateY(-1px);
}

.inline-form {
    display: inline;
    margin: 0;
}

.table-empty {
    text-align: center;
    color: var(--muted);
    padding: 24px 12px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

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

.status-badge--inactive {
    background: #e5e7eb;
    color: #374151;
}

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

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

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

.status-badge--draft {
    background: #fff7ed;
    color: #c2410c;
}

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

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

.table-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-top: 16px;
}

.table-pagination {
    display: flex;
    align-items: center;
    gap: 10px;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 18px;
}

.detail-item {
    display: grid;
    gap: 6px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface-muted);
}

.detail-item span {
    font-size: 13px;
    color: var(--muted);
}

.detail-item strong {
    font-size: 15px;
    color: var(--text);
}

.detail-item--block {
    margin-top: 18px;
}

.detail-actions {
    margin-top: 20px;
    display: flex;
    justify-content: flex-end;
}

.question-stack {
    display: grid;
    gap: 18px;
}

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

.content-group-card {
    display: grid;
    gap: 18px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
}

.content-section-list {
    display: grid;
    gap: 12px;
}

.content-section-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface-muted);
}

.preview-card {
    display: grid;
    gap: 16px;
}

.preview-html {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text);
}

.preview-html > *:first-child {
    margin-top: 0;
}

.content-section-item strong {
    display: inline-block;
    margin-bottom: 6px;
}

.question-card {
    display: grid;
    gap: 16px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface-muted);
}

.option-list,
.option-builder {
    display: grid;
    gap: 12px;
}

.option-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
}

.option-item.is-correct {
    border-color: rgba(22, 101, 52, 0.2);
    background: #f0fdf4;
}

.correct-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    color: #166534;
    background: #dcfce7;
}

.option-editor {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 140px 180px auto;
    gap: 12px;
    align-items: end;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
}

.option-editor__main textarea {
    min-height: 90px;
}

.option-editor__correct {
    width: 100%;
}

.option-editor__remove {
    align-self: center;
}

.form-section {
    display: grid;
    gap: 16px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface-muted);
}

.field--full {
    grid-column: 1 / -1;
}

.field-help {
    font-size: 13px;
    line-height: 1.5;
    color: var(--muted);
}

.content-textarea {
    width: 100%;
    min-height: 300px;
    font-family: "Noto Sans Devanagari", "Instrument Sans", "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.7;
}

.media-panel {
    display: grid;
    gap: 14px;
    margin-top: 16px;
    padding: 16px;
    border: 1px dashed var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.74);
}

.media-panel__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.media-panel__header h3 {
    margin: 0 0 4px;
}

.media-panel__header p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.media-panel__list {
    display: grid;
    gap: 14px;
}

.media-card {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 16px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
}

.media-card--draft {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
}

.media-card__preview img {
    width: 100%;
    height: 130px;
    object-fit: cover;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.media-card__fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.media-card__fields--draft {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.media-card__remove {
    align-self: center;
}

.checkbox--inline {
    align-self: center;
}

.btn-danger {
    background: #b91c1c;
    color: #fff;
    border-color: #b91c1c;
}

.chapter-media-manager {
    display: grid;
    gap: 18px;
}

.chapter-media-upload-shell {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
    overflow: hidden;
}

.chapter-media-upload-shell__summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
}

.chapter-media-upload-shell__summary h3 {
    margin: 0 0 4px;
}

.chapter-media-upload-shell__summary p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.chapter-media-upload-shell__body {
    padding: 18px;
    background: #fff;
}

.chapter-media-upload {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.chapter-media-upload__actions {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.chapter-media-manager__notice.is-error {
    color: #b91c1c;
}

.chapter-media-manager__notice.is-success {
    color: #166534;
}

.chapter-media-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.chapter-media-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

.chapter-media-item__thumb {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 60px;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: #f5f5f5;
    cursor: pointer;
    overflow: hidden;
    position: relative;
}

.chapter-media-item__thumb-frame,
.chapter-media-table-thumb__frame {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 60px;
    overflow: hidden;
    border-radius: 6px;
    background: #f5f5f5;
    flex: 0 0 auto;
}

.chapter-media-item__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    min-width: 0;
    max-width: none;
    max-height: none;
}

.chapter-media-item__body {
    display: grid;
    gap: 12px;
}

.chapter-media-item__title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.chapter-media-item__title-row h3 {
    margin: 0;
    font-size: 15px;
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chapter-media-item__context {
    display: grid;
    gap: 6px;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.5;
}

.chapter-media-item__shortcode {
    display: grid;
    gap: 6px;
}

.chapter-media-item__shortcode span {
    font-size: 12px;
    font-weight: 700;
    color: var(--muted);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.chapter-media-item__shortcode code {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    max-width: 100%;
    padding: 8px 10px;
    border-radius: 10px;
    background: #f1f5f9;
    color: #0f172a;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chapter-media-item__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.chapter-media-item__fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
    text-align: center;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
    background: #f8fafc;
}

.chapter-media-table-thumb {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 60px;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: #f5f5f5;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

.chapter-media-table-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    min-width: 0;
    max-width: none;
    max-height: none;
}

.chapter-media-table-thumb__fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    text-align: center;
    font-size: 18px;
    line-height: 1.3;
    color: var(--muted);
    background: #f5f5f5;
}

.chapter-media-table-row td {
    height: 90px;
    max-height: 90px;
    vertical-align: middle;
}

.chapter-media-table-title {
    display: grid;
    gap: 6px;
}

.chapter-media-table-title strong {
    display: block;
    font-size: 14px;
    line-height: 1.4;
}

.chapter-media-shortcode-cell {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.chapter-media-shortcode-cell code,
.chapter-media-detail-row code {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    max-width: 100%;
    padding: 8px 10px;
    border-radius: 10px;
    background: #f1f5f9;
    color: #0f172a;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid #e2e8f0;
}

.chapter-media-copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    background: #fff;
    color: #111827;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.chapter-media-copy-btn:hover {
    background: #f8fafc;
}

.chapter-media-actions {
    flex-wrap: nowrap;
}

.chapter-media-preview-panel {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 18px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
}

.chapter-media-preview-panel img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.chapter-media-preview-panel p {
    margin: 0 0 10px;
    line-height: 1.6;
}

.chapter-media-showcase {
    margin-top: 18px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface-muted);
}

.chapter-media-showcase img {
    width: 100%;
    max-height: 540px;
    object-fit: contain;
    border-radius: 12px;
    background: #fff;
}

.chapter-media-detail-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.media-lightbox {
    position: fixed;
    inset: 0;
    z-index: 50;
}

.media-lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.72);
}

.media-lightbox__dialog {
    position: relative;
    z-index: 1;
    width: min(92vw, 980px);
    margin: 4vh auto;
    padding: 22px;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.26);
}

.media-lightbox__dialog img {
    width: 100%;
    max-height: 76vh;
    object-fit: contain;
    border-radius: 14px;
    background: #f8fafc;
}

.media-lightbox__dialog p {
    margin: 12px 0 0;
    color: var(--text);
    font-weight: 600;
}

.media-lightbox__close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.08);
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}

body.is-modal-open {
    overflow: hidden;
}

.is-hidden {
    display: none !important;
}

.settings-form {
    display: grid;
    gap: 20px;
}

.settings-section {
    display: grid;
    gap: 18px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.settings-toggles {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.settings-toggles--multi .checkbox--card {
    min-width: 220px;
}

.settings-info-card {
    display: grid;
    gap: 16px;
    padding: 18px;
    border: 1px dashed rgba(15, 118, 110, 0.28);
    border-radius: 12px;
    background: rgba(15, 118, 110, 0.04);
}

.login-methods h3 {
    margin-bottom: 6px;
    font-size: 1rem;
}

.login-methods p {
    color: var(--text-muted);
}

.login-methods__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.login-method-card {
    display: grid;
    gap: 14px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}

.login-method-card__header strong {
    font-size: 0.95rem;
    color: var(--text);
}

.login-method-card__toggles {
    display: grid;
    gap: 12px;
}

.login-method-card__toggles .checkbox--card {
    width: 100%;
}

.settings-savebar {
    position: sticky;
    bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    border: 1px solid rgba(229, 231, 235, 0.95);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(10px);
    z-index: 5;
}

.settings-savebar strong {
    display: block;
    margin-bottom: 4px;
    font-size: 15px;
    color: var(--text);
}

@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .filter-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .settings-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .login-methods__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .option-editor {
        grid-template-columns: 1fr 140px;
    }

    .media-card,
    .media-card--draft {
        grid-template-columns: 1fr;
    }

    .media-card__fields,
    .media-card__fields--draft {
        grid-template-columns: 1fr 1fr;
    }

    .chapter-media-upload {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .chapter-media-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .chapter-media-preview-panel {
        grid-template-columns: 1fr;
    }

}

@media (max-width: 920px) {
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }

    .admin-sidebar.is-open {
        transform: translateX(0);
    }

    .media-panel__header {
        flex-direction: column;
    }

    .media-card__fields,
    .media-card__fields--draft {
        grid-template-columns: 1fr;
    }

    .chapter-media-upload {
        grid-template-columns: 1fr;
    }

    .chapter-media-upload-shell__summary,
    .chapter-media-item__title-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .chapter-media-grid {
        grid-template-columns: 1fr;
    }

    .media-lightbox__dialog {
        width: min(94vw, 980px);
        padding: 18px;
    }

    .admin-main {
        margin-left: 0;
    }

    .admin-header {
        padding: 18px 20px;
    }

    .sidebar-toggle {
        display: inline-flex;
        margin-bottom: 12px;
    }

    .panel-grid,
    .action-grid {
        grid-template-columns: 1fr;
    }

    .filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .chapter-contents-filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .settings-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 28px;
    }

    .container {
        padding: 16px;
    }

    .admin-header {
        position: sticky;
        min-height: auto;
        align-items: flex-start;
        flex-direction: column;
    }

    .admin-content,
    .main-content {
        padding-top: 16px;
    }

    .table-footer,
    .flex-between,
    .panel__header--split,
    .auth-row,
    .status-list div {
        align-items: flex-start;
        flex-direction: column;
    }

    .page-container {
        padding: 24px 0 16px;
    }

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

    .header-right {
        width: 100%;
    }

    .header-right .btn-primary {
        width: 100%;
        text-align: center;
    }

    .admin-header__actions {
        width: 100%;
        justify-content: flex-start;
    }

    .user-menu__dropdown {
        left: 0;
        right: auto;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        margin-top: 20px;
    }

    .filter-grid {
        grid-template-columns: 1fr;
    }

    .login-methods__grid {
        grid-template-columns: 1fr;
    }

    .chapter-contents-filter-card {
        padding: 18px;
        margin-bottom: 24px;
    }

    .chapter-contents-filter-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .chapter-contents-filter-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .chapter-contents-filter-actions .btn {
        width: 100%;
        text-align: center;
    }

    .detail-grid {
        grid-template-columns: 1fr;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .option-editor {
        grid-template-columns: 1fr;
    }

    .settings-savebar {
        align-items: flex-start;
        flex-direction: column;
    }

    .settings-savebar .btn {
        width: 100%;
        text-align: center;
    }

    .filter-actions {
        width: 100%;
    }

    .filter-actions .btn {
        width: 100%;
        text-align: center;
    }
}