/* ========================================
   ADMIN UJIAN - Design System
   Dark Mode, Glassmorphism, Premium UI
   ======================================== */

/* ---- CSS Variables ---- */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.15);
    --secondary: #a855f7;
    --success: #22c55e;
    --success-hover: #16a34a;
    --warning: #f59e0b;
    --warning-hover: #d97706;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --info: #06b6d4;

    /* Background */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: rgba(30, 41, 59, 0.8);

    /* Glass */
    --glass-bg: rgba(30, 41, 59, 0.6);
    --glass-border: rgba(148, 163, 184, 0.1);
    --glass-hover: rgba(30, 41, 59, 0.8);

    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Border */
    --border-color: rgba(148, 163, 184, 0.15);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1, #a855f7);
    --gradient-success: linear-gradient(135deg, #22c55e, #06b6d4);
    --gradient-warning: linear-gradient(135deg, #f59e0b, #f97316);
    --gradient-danger: linear-gradient(135deg, #ef4444, #ec4899);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

    /* Layout */
    --sidebar-width: 270px;
    --topbar-height: 64px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
}

code {
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.85em;
    color: var(--info);
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* =============== SIDEBAR =============== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-header {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo .material-symbols-rounded {
    font-size: 32px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-logo h2 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.sidebar-logo small {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 8px;
    transition: all 0.2s;
    display: none;
}

.sidebar-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Nav Items */
.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 2px;
}

.nav-item:hover {
    background: var(--primary-light);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.nav-item .material-symbols-rounded {
    font-size: 22px;
}

.nav-divider {
    padding: 16px 16px 8px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--glass-border);
}

.admin-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.admin-avatar {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.admin-avatar .material-symbols-rounded {
    font-size: 20px;
    color: white;
}

.admin-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.admin-role {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.logout-btn {
    color: var(--danger) !important;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.1) !important;
}

/* =============== MAIN CONTENT =============== */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left 0.3s;
}

/* ---- Topbar ---- */
.topbar {
    position: sticky;
    top: 0;
    height: var(--topbar-height);
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 100;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-toggle {
    display: none;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.breadcrumb .material-symbols-rounded {
    font-size: 18px;
    color: var(--text-muted);
}

.current-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ---- Page Content ---- */
.page-content {
    padding: 32px;
    max-width: 1400px;
}

/* ---- Page Header ---- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

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

/* =============== STATS CARDS =============== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    position: relative;
    padding: 24px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 16px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-gradient-1 { background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.1)); border: 1px solid rgba(99, 102, 241, 0.2); }
.stat-gradient-2 { background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(236, 72, 153, 0.1)); border: 1px solid rgba(168, 85, 247, 0.2); }
.stat-gradient-3 { background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(6, 182, 212, 0.1)); border: 1px solid rgba(34, 197, 94, 0.2); }
.stat-gradient-4 { background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(249, 115, 22, 0.1)); border: 1px solid rgba(245, 158, 11, 0.2); }

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-gradient-1 .stat-icon { background: var(--gradient-primary); }
.stat-gradient-2 .stat-icon { background: linear-gradient(135deg, #a855f7, #ec4899); }
.stat-gradient-3 .stat-icon { background: var(--gradient-success); }
.stat-gradient-4 .stat-icon { background: var(--gradient-warning); }

.stat-icon .material-symbols-rounded {
    font-size: 28px;
    color: white;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-top: 2px;
}

.stat-decoration {
    position: absolute;
    right: -20px;
    bottom: -20px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    opacity: 0.05;
}

.stat-gradient-1 .stat-decoration { background: #6366f1; }
.stat-gradient-2 .stat-decoration { background: #a855f7; }
.stat-gradient-3 .stat-decoration { background: #22c55e; }
.stat-gradient-4 .stat-decoration { background: #f59e0b; }

/* =============== CARDS =============== */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow 0.3s;
}

.card:hover {
    box-shadow: var(--shadow-glow);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.card-header h3 .material-symbols-rounded {
    font-size: 20px;
    color: var(--primary);
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--glass-border);
}

.card-actions {
    display: flex;
    gap: 8px;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

/* =============== BUTTONS =============== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    border: none;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.btn .material-symbols-rounded {
    font-size: 18px;
}

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

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

.btn-warning {
    background: var(--gradient-warning);
    color: white;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-danger {
    background: var(--gradient-danger);
    color: white;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-sm .material-symbols-rounded {
    font-size: 16px;
}

.btn-group {
    display: flex;
    gap: 0;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* =============== DATA TABLE =============== */
.table-responsive {
    overflow-x: auto;
}

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

.data-table thead th {
    padding: 14px 16px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--glass-border);
    white-space: nowrap;
}

.data-table tbody td {
    padding: 14px 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--glass-border);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background 0.2s;
}

.data-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.05);
}

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

/* ---- Badges ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.badge-primary {
    background: var(--primary-light);
    color: #818cf8;
}

.badge-info {
    background: rgba(6, 182, 212, 0.15);
    color: #22d3ee;
}

.badge-success {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
}

/* ---- Action Buttons ---- */
.action-buttons {
    display: flex;
    gap: 6px;
}

/* =============== FORMS =============== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='m7.247 11.14-4.796-5.481C1.562 4.64 2.275 3.5 3.464 3.5h9.072c1.188 0 1.902 1.14 1.012 2.159L8.753 11.14a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    accent-color: var(--primary);
}

.form-hint {
    display: block;
    margin-top: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.file-input {
    padding: 8px !important;
    cursor: pointer;
}

.file-input::file-selector-button {
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    cursor: pointer;
    margin-right: 12px;
    transition: all 0.2s;
}

.file-input::file-selector-button:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.input-wrapper {
    position: relative;
}

.input-wrapper .material-symbols-rounded {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 18px;
}

.input-wrapper input {
    padding-left: 40px !important;
}

/* ---- Filter Form ---- */
.filter-form .filter-group {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.filter-form .form-group {
    min-width: 180px;
    flex: 1;
    margin-bottom: 0;
}

/* =============== MODALS =============== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 8px;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ---- Import Info ---- */
.import-info {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: var(--primary-light);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.import-info .material-symbols-rounded {
    color: var(--primary);
    font-size: 24px;
    flex-shrink: 0;
}

.import-info strong {
    display: block;
    color: var(--text-primary);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.import-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

/* =============== ALERTS =============== */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 0.9rem;
    animation: alertIn 0.3s ease-out;
}

@keyframes alertIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #4ade80;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fbbf24;
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: #22d3ee;
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.7;
    padding: 0 4px;
}

.alert-close:hover {
    opacity: 1;
}

/* =============== QUICK ACTIONS =============== */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s;
    text-align: center;
}

.quick-action-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.15);
}

.quick-action-btn .material-symbols-rounded {
    font-size: 28px;
}

/* =============== DISTRIBUTION =============== */
.distribution-item {
    margin-bottom: 16px;
}

.distribution-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.distribution-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.distribution-name {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
}

.distribution-count {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.distribution-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.distribution-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =============== PREVIEW CARDS =============== */
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.preview-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s;
}

.preview-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
    transform: translateY(-2px);
}

.preview-card-inner {
    padding: 16px;
    background: var(--bg-secondary);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--bg-tertiary);
}

.preview-logo {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.preview-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.preview-institution {
    text-align: center;
    flex: 1;
}

.preview-institution small {
    font-size: 0.6rem;
    color: var(--text-muted);
    display: block;
    line-height: 1.2;
}

.preview-institution strong {
    font-size: 0.7rem;
    color: var(--text-primary);
}

.preview-title {
    text-align: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    padding: 4px;
    background: var(--primary-light);
    border-radius: 6px;
}

.preview-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.preview-row {
    display: grid;
    grid-template-columns: 80px 1fr;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.preview-row span:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* =============== EMPTY STATE =============== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .material-symbols-rounded {
    font-size: 64px;
    opacity: 0.3;
    display: block;
    margin-bottom: 16px;
}

/* =============== SETTINGS =============== */
.logo-preview {
    margin-bottom: 12px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    text-align: center;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--glass-border);
}

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

.info-label {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.info-value {
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
}

/* =============== SIDEBAR OVERLAY =============== */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

/* =============== TEXT UTILITIES =============== */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* =============== RESPONSIVE =============== */
@media (max-width: 1024px) {
    .content-grid,
    .settings-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .sidebar-toggle {
        display: block;
    }

    .mobile-toggle {
        display: block !important;
        background: none;
        border: none;
        color: var(--text-secondary);
        cursor: pointer;
        padding: 4px;
    }

    .sidebar-overlay.active {
        display: block;
    }

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

    .page-content {
        padding: 20px;
    }

    .topbar {
        padding: 0 16px;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

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

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

    .filter-form .filter-group {
        flex-direction: column;
    }

    .filter-form .form-group {
        min-width: auto;
    }
}

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

    .quick-actions {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-title {
        font-size: 1.4rem;
    }
}

/* =============== ANIMATIONS =============== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.stat-card { animation: slideUp 0.5s ease-out; }
.stat-card:nth-child(1) { animation-delay: 0.05s; }
.stat-card:nth-child(2) { animation-delay: 0.1s; }
.stat-card:nth-child(3) { animation-delay: 0.15s; }
.stat-card:nth-child(4) { animation-delay: 0.2s; }

.card {
    animation: slideUp 0.5s ease-out;
    animation-fill-mode: both;
}