/* ============================================
   ADMIN-SPECIFIC STYLES
   ============================================ */

/* === Tuition Price Table === */
.price-table-section {
    margin-bottom: var(--space-6);
}

.price-table-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.price-table-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.price-category-badge {
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.price-category-badge.daily { background: var(--primary-100); color: var(--primary-700); }
.price-category-badge.foundation { background: var(--accent-100); color: var(--accent-600); }
.price-category-badge.business { background: var(--warm-100); color: var(--warm-600); }

.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
}

.price-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--border-light);
    padding: var(--space-5);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-smooth);
    position: relative;
    overflow: hidden;
}

.price-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-300);
}

.price-card.popular {
    border-color: var(--primary-400);
    box-shadow: var(--shadow-glow);
}

.price-card.popular::before {
    content: 'Phổ biến';
    position: absolute;
    top: 12px; right: -30px;
    transform: rotate(45deg);
    background: var(--gradient-primary);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 4px 36px;
}

.price-level {
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-500);
    margin-bottom: var(--space-2);
}

.price-amount {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.price-amount small {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.price-sessions {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

.price-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--space-4);
}

.price-features li {
    padding: var(--space-2) 0;
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.price-features li::before {
    content: '✓';
    color: var(--accent-500);
    font-weight: 700;
    flex-shrink: 0;
}

/* === Revenue / Finance Section === */
.finance-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.finance-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    border: 1px solid var(--border-light);
}

.finance-card-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-2);
}

.finance-card-value {
    font-size: var(--font-size-2xl);
    font-weight: 800;
}

.finance-card-value.income { color: var(--accent-600); }
.finance-card-value.expense { color: var(--danger-500); }
.finance-card-value.profit { color: var(--primary-600); }

/* === Class Management === */
.class-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-4);
}

.class-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-smooth);
}

.class-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.class-card-top {
    padding: var(--space-5);
}

.class-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-3);
}

.class-name {
    font-size: var(--font-size-base);
    font-weight: 700;
}

.class-status {
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.class-status.active { background: var(--accent-100); color: var(--accent-700); }
.class-status.inactive { background: var(--gray-100); color: var(--gray-600); }
.class-status.upcoming { background: var(--info-100); color: var(--info-500); }

.class-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.class-meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.class-meta-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    opacity: 0.6;
}

.class-card-bottom {
    padding: var(--space-3) var(--space-5);
    background: var(--gray-50);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.class-students-preview {
    display: flex;
}

.class-students-preview .avatar {
    width: 28px;
    height: 28px;
    margin-left: -8px;
    border: 2px solid var(--bg-secondary);
    font-size: 10px;
}

.class-students-preview .avatar:first-child { margin-left: 0; }

.class-student-count {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: 600;
}

/* === Theme Settings === */
.theme-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

.color-pickers {
    display: grid;
    gap: var(--space-4);
}

.color-picker-group {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.color-picker-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    min-width: 120px;
}

.color-picker-group input[type="color"] {
    width: 48px;
    height: 36px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2px;
    cursor: pointer;
}

.theme-preview {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    border: 1px dashed var(--border-color);
}

/* === Export Buttons === */
.export-group {
    display: flex;
    gap: var(--space-2);
}

.export-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border: 1.5px solid var(--border-color);
    color: var(--gray-600);
    background: var(--bg-secondary);
    transition: all var(--duration-fast);
}

.export-btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.export-btn.excel { color: var(--accent-700); border-color: var(--accent-300); }
.export-btn.excel:hover { background: var(--accent-50); }
.export-btn.pdf { color: var(--danger-600); border-color: var(--danger-300); }
.export-btn.pdf:hover { background: var(--danger-50); }

/* === Student Management Detail === */
.student-mini-stack {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 150px;
}

.student-mini-line {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.student-mini-line strong {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.25;
}

.student-mini-line > span,
.student-mini-line > small,
.student-more {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    line-height: 1.35;
}

.student-resource-links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    min-width: 130px;
}

.student-resource-chip {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 3px 9px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.student-resource-chip.ready {
    background: var(--accent-100);
    color: var(--accent-700);
}

.student-resource-chip.missing {
    background: var(--warm-100);
    color: var(--warm-600);
}

.student-resource-chip.neutral {
    background: var(--gray-100);
    color: var(--gray-700);
}

.student-resource-chip.as-button {
    border: 0;
    cursor: pointer;
    font-family: inherit;
}

.student-directory {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.student-directory-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.student-select-all {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
}

.student-directory-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.student-admin-card {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr);
    gap: var(--space-3);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
}

.student-admin-select {
    padding-top: 10px;
}

.student-admin-body {
    min-width: 0;
}

.student-admin-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.student-admin-identity {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    min-width: 0;
}

.student-admin-identity h3 {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.25;
}

.student-admin-identity p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.4;
    margin-top: 2px;
}

.student-admin-actions {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.student-admin-goal {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    gap: var(--space-3);
    align-items: start;
    border-radius: var(--radius-md);
    background: var(--gray-50);
    padding: var(--space-3);
    margin-bottom: var(--space-3);
}

.student-admin-goal strong {
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.student-admin-goal span {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.45;
}

.student-admin-info-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(220px, 1fr));
    gap: var(--space-3);
}

.student-admin-info-grid section {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    background: var(--bg-secondary);
    min-width: 0;
}

.student-admin-info-grid h4 {
    color: var(--gray-500);
    font-size: var(--font-size-xs);
    font-weight: 800;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    margin-bottom: var(--space-2);
}

.student-card-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.student-card-line {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.student-card-line strong {
    color: var(--text-primary);
    font-weight: 750;
    line-height: 1.3;
}

.student-card-line span,
.student-card-line small,
.student-card-empty {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    line-height: 1.35;
}

.manual-drive-create {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    border: 1px solid var(--accent-200);
    border-radius: var(--radius-md);
    background: var(--accent-50);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.manual-drive-create div {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.manual-drive-create strong {
    color: var(--text-primary);
    font-weight: 800;
}

.manual-drive-create span {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.google-api-fix {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.google-api-fix-alert {
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-md);
    background: var(--warm-50);
    padding: var(--space-4);
}

.google-api-fix-alert strong {
    color: var(--text-primary);
    font-weight: 800;
}

.google-api-fix-alert p,
.google-api-fix li {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.google-api-fix ol {
    margin: 0;
    padding-left: var(--space-5);
}

.manual-drive-class-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    border-radius: var(--radius-md);
    background: var(--gray-50);
    padding: var(--space-3);
}

.manual-drive-class-list div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.manual-drive-class-list strong {
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.manual-drive-class-list span {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
}

.student-detail-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.student-detail-panel {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    background: var(--gray-50);
}

.student-detail-panel span {
    display: block;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-bottom: 6px;
}

.student-detail-panel strong {
    display: block;
    color: var(--text-primary);
    font-size: var(--font-size-base);
    line-height: 1.3;
}

.student-detail-panel p {
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    line-height: 1.4;
}

.student-detail-section {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.student-detail-section > div,
.student-detail-row {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    background: var(--bg-secondary);
}

.student-detail-section h4,
.student-detail-title {
    font-size: var(--font-size-base);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.student-detail-row {
    margin-bottom: var(--space-3);
}

.student-schedule-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.student-schedule-item {
    border-radius: var(--radius-md);
    background: var(--gray-50);
    padding: var(--space-3);
}

.student-schedule-item strong,
.student-schedule-item span {
    display: block;
}

.student-schedule-item span {
    margin-top: 2px;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
}

.student-resource-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.student-resource-row {
    display: grid;
    grid-template-columns: minmax(180px, 1fr) 1.5fr;
    gap: var(--space-3);
    align-items: center;
    border-radius: var(--radius-md);
    background: var(--gray-50);
    padding: var(--space-3);
}

.student-resource-row > div:first-child > strong,
.student-resource-row > div:first-child > span {
    display: block;
}

.student-resource-row > div:first-child > span {
    margin-top: 2px;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
}

.student-info-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
}

.student-info-grid > div {
    border-radius: var(--radius-md);
    background: var(--gray-50);
    padding: var(--space-3);
}

.student-info-grid > div > span,
.student-info-grid > div > small {
    display: block;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
}

.student-info-grid strong {
    display: block;
    color: var(--text-primary);
    line-height: 1.35;
    margin: 3px 0;
}

@media (max-width: 768px) {
    .finance-summary { grid-template-columns: 1fr; }
    .class-grid { grid-template-columns: 1fr; }
    .theme-panel { grid-template-columns: 1fr; }
    .price-grid { grid-template-columns: repeat(2, 1fr); }
    .student-detail-grid,
    .student-detail-section,
    .student-info-grid,
    .student-resource-row {
        grid-template-columns: 1fr;
    }
    .student-admin-card,
    .student-admin-goal,
    .student-admin-info-grid {
        grid-template-columns: 1fr;
    }
    .student-admin-card-header {
        flex-direction: column;
    }
    .student-admin-actions {
        justify-content: flex-start;
    }
    .manual-drive-create {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .price-grid { grid-template-columns: 1fr; }
}