/* =============================================
   Ledger & Logic Cafe — Design System
   Phase 0 — Bootstrap 5 RTL Foundation
   ============================================= */

/* ---- Google Font: Alexandria ---- */
@import url('https://fonts.googleapis.com/css2?family=Alexandria:wght@300;400;500;600;700;800&display=swap');

/* =============================================
   CSS Variables (Design Tokens)
   ============================================= */
:root {
    /* Primary Palette */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.1);
    --primary-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);

    /* Accent */
    --accent: #f59e0b;
    --accent-hover: #d97706;

    /* Success / Warning / Danger */
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.1);

    /* Light Mode */
    --bg-body: #f0f2f5;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-topbar: #ffffff;
    --bg-input: #ffffff;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);

    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition: 0.25s ease;
    --transition-slow: 0.35s ease;

    /* Border Radius */
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
}

/* ---- Dark Mode ---- */
[data-theme="dark"] {
    --bg-body: #0f172a;
    --bg-sidebar: #1e293b;
    --bg-card: #1e293b;
    --bg-topbar: #1e293b;
    --bg-input: #334155;
    --border-color: #334155;
    --border-light: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.4);
}

/* ---- Manage Theme Overrides ---- */
body.manage-body {
    --primary: #0f766e;
    --primary-hover: #0d5f58;
    --primary-light: rgba(15, 118, 110, 0.12);
    --primary-gradient: linear-gradient(135deg, #0f766e, #0ea5a3);
}

body.manage-body .sidebar-brand-icon {
    background: var(--primary-gradient);
}

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

html {
    font-size: 14px;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

::selection {
    background: var(--primary);
    color: white;
}

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

/* =============================================
   Layout: App Wrapper
   ============================================= */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.app-main {
    flex: 1;
    margin-right: var(--sidebar-width);
    transition: margin-right var(--transition);
    display: flex;
    flex-direction: column;
}

.app-content {
    flex: 1;
    padding: 24px;
}

/* Sidebar collapsed */
.sidebar-collapsed .app-main {
    margin-right: var(--sidebar-collapsed);
}

/* =============================================
   Sidebar
   ============================================= */
.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-left: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    z-index: 1040;
    display: flex;
    flex-direction: column;
    transition: width var(--transition), transform var(--transition);
    overflow: hidden;
}

.sidebar-brand {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    min-height: 68px;
}

.sidebar-brand-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.sidebar-brand-text {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-brand-name {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
    white-space: nowrap;
}

.sidebar-brand-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.sidebar-nav {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
}

.sidebar-section-title {
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 16px 12px 8px;
    white-space: nowrap;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    white-space: nowrap;
}

.sidebar-link i {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-link:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.sidebar-link.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--border-color);
}

/* Collapsed sidebar */
.sidebar-collapsed .sidebar {
    width: var(--sidebar-collapsed);
}

.sidebar-collapsed .sidebar-brand-text,
.sidebar-collapsed .sidebar-link span,
.sidebar-collapsed .sidebar-section-title {
    display: none;
}

.sidebar-collapsed .sidebar-link {
    justify-content: center;
    padding: 12px;
}

/* =============================================
   Topbar
   ============================================= */
.topbar {
    background: var(--bg-topbar);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1030;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.topbar-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
}

.topbar-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.topbar-user:hover {
    background: var(--primary-light);
}

.topbar-user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.85rem;
}

.topbar-user-info {
    display: flex;
    flex-direction: column;
}

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

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

.branch-selector {
    display: flex;
    align-items: center;
    gap: 8px;
}

.branch-selector select {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    font-family: inherit;
    font-size: 0.82rem;
    background: var(--bg-input);
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast);
    min-width: 160px;
}

.branch-selector select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* =============================================
   Page Header
   ============================================= */
.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 4px;
    color: var(--text-primary);
}

.page-header p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin: 0;
}

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

/* =============================================
   Cards
   ============================================= */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), border-color var(--transition);
}

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

.card-body {
    padding: 20px;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-card {
    position: relative;
    overflow: hidden;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    opacity: 0.06;
}

.stat-card.primary .stat-icon { background: var(--primary-light); color: var(--primary); }
.stat-card.primary::after { background: var(--primary); }
.stat-card.success .stat-icon { background: var(--success-bg); color: var(--success); }
.stat-card.success::after { background: var(--success); }
.stat-card.warning .stat-icon { background: var(--warning-bg); color: var(--warning); }
.stat-card.warning::after { background: var(--warning); }
.stat-card.info .stat-icon { background: var(--info-bg); color: var(--info); }
.stat-card.info::after { background: var(--info); }

/* Welcome card */
.welcome-card {
    background: var(--primary-gradient);
    color: white;
    border: none;
    position: relative;
    overflow: hidden;
}

.welcome-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -30%;
    width: 200px;
    height: 200px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
}

.welcome-card::after {
    content: '';
    position: absolute;
    bottom: -40%;
    right: -20%;
    width: 160px;
    height: 160px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.welcome-card .card-body {
    position: relative;
    z-index: 1;
}

.welcome-card h2 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.welcome-card p {
    opacity: 0.85;
    font-size: 0.9rem;
    margin: 0;
}

/* Quick nav cards */
.quick-nav-card {
    cursor: pointer;
    text-align: center;
    transition: all var(--transition);
}

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

.quick-nav-card i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.quick-nav-card h6 {
    font-weight: 600;
    font-size: 0.85rem;
    margin: 0;
}

.quick-nav-card p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 4px 0 0;
}

/* =============================================
   Tables
   ============================================= */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.table th {
    background: var(--bg-body);
    font-weight: 600;
    text-align: right;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    vertical-align: middle;
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--primary-light);
}

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

/* =============================================
   Forms
   ============================================= */
.form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 6px;
    display: block;
}

.form-control {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-family: inherit;
    font-size: 0.88rem;
    background: var(--bg-input);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
}

.form-control:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.invalid-feedback {
    color: var(--danger);
    font-size: 0.78rem;
    margin-top: 4px;
    display: block;
}

.form-select {
    appearance: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    padding-left: 36px;
    font-family: inherit;
    font-size: 0.88rem;
    background: var(--bg-input) url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e") no-repeat left 12px center;
    background-size: 14px;
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
    cursor: pointer;
}

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

.form-check-input {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* =============================================
   Buttons
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    border: none;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.45);
    transform: translateY(-1px);
    color: white;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #059669;
    color: white;
}

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

.btn-danger:hover {
    background: #dc2626;
    color: white;
}

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

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.78rem;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 0.95rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* =============================================
   Badges
   ============================================= */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.2px;
}

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

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge-info {
    background: var(--info-bg);
    color: var(--info);
}

/* =============================================
   Alerts
   ============================================= */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 0.88rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-danger, .alert-error {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-warning {
    background: var(--warning-bg);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-info {
    background: var(--info-bg);
    color: var(--info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.alert .btn-close {
    margin-right: auto;
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.5;
    padding: 0;
    color: inherit;
}

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

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

/* =============================================
   Auth Pages (Login)
   ============================================= */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--bg-body);
    position: relative;
}

.auth-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    position: relative;
    z-index: 1;
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: var(--primary-gradient);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: 16px;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.auth-logo h1 {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 4px;
}

.auth-logo p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}

.auth-form .form-group {
    margin-bottom: 20px;
}

.auth-form .form-control {
    padding: 12px 16px;
    font-size: 0.9rem;
    border-radius: var(--radius);
}

.auth-form .btn-primary {
    padding: 12px 24px;
    font-size: 0.95rem;
    border-radius: var(--radius);
}

/* =============================================
   Dark Mode Toggle
   ============================================= */
.theme-toggle {
    position: relative;
    width: 44px;
    height: 24px;
    border-radius: 12px;
    background: var(--border-color);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: background var(--transition);
}

.theme-toggle::after {
    content: '';
    position: absolute;
    top: 3px;
    right: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition);
}

[data-theme="dark"] .theme-toggle {
    background: var(--primary);
}

[data-theme="dark"] .theme-toggle::after {
    transform: translateX(-20px);
}

/* =============================================
   Empty State
   ============================================= */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state h5 {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 0.88rem;
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(100%);
        width: var(--sidebar-width) !important;
    }

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

    .app-main {
        margin-right: 0 !important;
    }

    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.4);
        z-index: 1039;
    }

    .sidebar.show ~ .sidebar-overlay {
        display: block;
    }
}

@media (max-width: 575.98px) {
    .app-content {
        padding: 16px;
    }

    .topbar {
        padding: 0 16px;
    }

    .auth-card {
        padding: 28px 20px;
    }

    .topbar-user-info {
        display: none;
    }

    .branch-selector select {
        min-width: 120px;
    }
}

/* =============================================
   Utility Classes
   ============================================= */
.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-secondary) !important; }

.bg-primary-light { background: var(--primary-light) !important; }
.bg-success-light { background: var(--success-bg) !important; }
.bg-danger-light { background: var(--danger-bg) !important; }
.bg-warning-light { background: var(--warning-bg) !important; }

.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }
.gap-4 { gap: 24px; }

.rounded-lg { border-radius: var(--radius-lg); }

/* Skeleton loading */
.skeleton {
    background: linear-gradient(90deg, var(--border-light) 25%, var(--border-color) 50%, var(--border-light) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}