/* ============================================
   Advanced Daily Planner - Stylesheet
   ============================================ */

/* ---- CSS Variables ---- */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --bg-sidebar: #1a1a2e;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --accent: #3B82F6;
    --accent-hover: #2563EB;
    --accent-light: #EFF6FF;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;
    --radius: 24px;
    --radius-sm: 16px;
    /*--shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);*/
    /*--shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 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(0,0,0,0.05);*/
    --transition: all 0.2s ease;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-family-fa: 'Vazirmatn', 'Tahoma', sans-serif;
}

[data-theme="dark"] {
    --bg-primary: #232731;
    --bg-secondary: #0c0c1d;
    --bg-card: #191e26;
    --bg-sidebar: #0c0c1d;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #252a31;
    --accent-light: #1e3a5f;
    /*--shadow: 0 1px 3px rgba(0,0,0,0.3);*/
    /*--shadow-md: 0 4px 6px rgba(0,0,0,0.3);*/
    /*--shadow-lg: 0 10px 15px rgba(0,0,0,0.3);*/
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

body[dir="rtl"] {
    font-family: var(--font-family-fa);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--accent-hover);
}

img { max-width: 100%; }

/* ---- Layout ---- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 32px;
    max-width: 100%;
    transition: var(--transition);
}

body[dir="rtl"] .main-content {
    margin-left: 0;
    margin-right: 260px;
}

@media (max-width: 768px) {
    .main-content {
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 16px;
    }
}

/* ---- Sidebar ---- */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: var(--bg-sidebar);
    color: #e2e8f0;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: var(--transition);
    overflow-y: auto;
}

body[dir="rtl"] .sidebar {
    left: auto;
    right: 0;
}

.sidebar-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 8px;
}

.sidebar-logo svg {
    width: 28px;
    height: 28px;
    color: var(--accent);
}

.sidebar-user {
    padding: 12px 8px;
    margin-bottom: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-user .user-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: #fff;
}

.sidebar-user .user-level {
    font-size: 0.75rem;
    color: var(--accent);
}

.sidebar-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: #cbd5e1;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.sidebar-nav a.active {
    background: var(--accent);
    color: #fff;
}

.sidebar-nav svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Sidebar toggle for mobile */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 200;
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    line-height: 1;
}

body[dir="rtl"] .sidebar-toggle {
    left: auto;
    right: 16px;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    body[dir="rtl"] .sidebar {
        transform: translateX(100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-toggle {
        display: block;
    }
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
    }
    .sidebar-overlay.show {
        display: block;
    }
}

/* ---- Cards ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ---- Stats Grid ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-icon.blue   { background: #EFF6FF; color: #3B82F6; }
.stat-icon.green  { background: #ECFDF5; color: #10B981; }
.stat-icon.amber  { background: #FFFBEB; color: #F59E0B; }
.stat-icon.violet { background: #F5F3FF; color: #8B5CF6; }

[data-theme="dark"] .stat-icon.blue   { background: #1e3a5f; }
[data-theme="dark"] .stat-icon.green  { background: #064e3b; }
[data-theme="dark"] .stat-icon.amber  { background: #78350f; }
[data-theme="dark"] .stat-icon.violet { background: #4c1d95; }

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ---- Charts Grid ---- */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

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

.chart-container {
    position: relative;
    height: 260px;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    line-height: 1.4;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
}

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

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}
.btn-danger:hover {
    background: #dc2626;
}

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

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

.btn-icon {
    padding: 8px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.btn-icon:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}
.btn-icon svg {
    width: 18px;
    height: 18px;
}

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

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9rem;
    font-family: inherit;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

.form-input[type="color"] {
    width: 50px;
    height: 40px;
    padding: 4px;
    cursor: pointer;
}

/* ---- Tables ---- */
.table-wrapper {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

body[dir="rtl"] .table th,
body[dir="rtl"] .table td {
    text-align: right;
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody tr:hover {
    background: var(--bg-secondary);
}

/* ---- Badges / Tags ---- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
    white-space: nowrap;
}

.badge-blue   { background: #EFF6FF; color: #2563EB; }
.badge-green  { background: #ECFDF5; color: #059669; }
.badge-amber  { background: #FFFBEB; color: #D97706; }
.badge-red    { background: #FEF2F2; color: #DC2626; }
.badge-violet { background: #F5F3FF; color: #7C3AED; }
.badge-gray   { background: #F3F4F6; color: #6B7280; }

[data-theme="dark"] .badge-blue   { background: #1e3a5f; color: #60a5fa; }
[data-theme="dark"] .badge-green  { background: #064e3b; color: #34d399; }
[data-theme="dark"] .badge-amber  { background: #78350f; color: #fbbf24; }
[data-theme="dark"] .badge-red    { background: #7f1d1d; color: #f87171; }
[data-theme="dark"] .badge-violet { background: #4c1d95; color: #a78bfa; }
[data-theme="dark"] .badge-gray   { background: #374151; color: #9ca3af; }

/* ---- Progress Bar ---- */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 100px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 100px;
    transition: width 0.5s ease;
}

.progress-bar-fill.green { background: var(--success); }

/* ---- XP Bar ---- */
.xp-bar-wrapper {
    padding: 0 8px;
    margin-bottom: 16px;
}

.xp-label {
    font-size: 0.7rem;
    color: #94a3b8;
    margin-bottom: 4px;
    display: flex;
    justify-content: space-between;
}

.xp-bar {
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 100px;
    overflow: hidden;
}

.xp-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #3B82F6);
    border-radius: 100px;
    transition: width 0.5s ease;
}

/* ---- Task List ---- */
.task-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.task-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: grab;
}

.task-item:hover {
    box-shadow: var(--shadow);
}

.task-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.task-item.done .task-title {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-checkbox {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.task-checkbox:hover {
    border-color: var(--accent);
}

.task-checkbox.checked {
    background: var(--success);
    border-color: var(--success);
}

.task-checkbox.checked svg {
    display: block;
}

.task-checkbox svg {
    display: none;
    width: 12px;
    height: 12px;
    color: #fff;
}

.task-body {
    flex: 1;
    min-width: 0;
}

.task-title {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 2px;
}

.task-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.task-meta span {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 3px;
}

.task-meta svg {
    width: 12px;
    height: 12px;
}

.task-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.task-drag-handle {
    cursor: grab;
    color: var(--text-muted);
    padding: 4px;
}

.task-drag-handle svg {
    width: 16px;
    height: 16px;
}

/* ---- Plan Cards ---- */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.plan-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--plan-color, var(--accent));
}

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

.plan-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 12px;
}

.plan-title {
    font-size: 1rem;
    font-weight: 600;
}

.plan-category {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.plan-progress {
    margin-top: 12px;
}

.plan-progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.plan-dates {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ---- Achievements ---- */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

.achievement-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.achievement-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 8px;
    font-size: 1.25rem;
}

.achievement-icon svg {
    width: 24px;
    height: 24px;
}

.achievement-name {
    font-size: 0.85rem;
    font-weight: 600;
}

.achievement-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ---- Modal ---- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 500;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

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

.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

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

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px;
    transition: var(--transition);
}

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

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ---- Flash / Alert ---- */
.flash {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: flashIn 0.3s ease;
}

@keyframes flashIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.flash-success { background: #ECFDF5; color: #065F46; border: 1px solid #A7F3D0; }
.flash-error   { background: #FEF2F2; color: #991B1B; border: 1px solid #FECACA; }
.flash-info    { background: #EFF6FF; color: #1E40AF; border: 1px solid #BFDBFE; }
.flash-warning { background: #FFFBEB; color: #92400E; border: 1px solid #FDE68A; }

[data-theme="dark"] .flash-success { background: #064e3b; color: #34d399; border-color: #065f46; }
[data-theme="dark"] .flash-error   { background: #7f1d1d; color: #f87171; border-color: #991b1b; }
[data-theme="dark"] .flash-info    { background: #1e3a5f; color: #60a5fa; border-color: #1e40af; }
[data-theme="dark"] .flash-warning { background: #78350f; color: #fbbf24; border-color: #92400e; }

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

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

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
}

.auth-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 32px;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ---- Landing Page ---- */
.landing-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-primary);
}

.landing-hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 16px;
    max-width: 700px;
    text-wrap: balance;
}

.landing-hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.6;
}

.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 50;
}

[data-theme="dark"] .landing-nav {
    background: rgba(15,23,42,0.8);
}

.landing-nav-brand {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.landing-nav-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.landing-features {
    padding: 80px 24px;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ---- Page Header ---- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
}

/* ---- Section Title ---- */
.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

/* ---- Priority Colors ---- */
.priority-low    { color: var(--info);    }
.priority-medium { color: var(--warning); }
.priority-high   { color: var(--danger);  }
.priority-urgent { color: #991B1B; }

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

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 0.9rem;
}

/* ---- Responsive Two-Col ---- */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 640px) {
    .two-col {
        grid-template-columns: 1fr;
    }
}

/* ---- Utility Classes ---- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-muted { color: var(--text-muted); }
.w-full { width: 100%; }
.hidden { display: none !important; }