/* ═══════════════════════════════════════════════════════════════════════════
 * SADAF — Modern Commerce Design System
 * ═══════════════════════════════════════════════════════════════════════════
 * طراحی مدرن با الهام از:
 *  - Stripe Dashboard (header, cards, buttons)
 *  - Linear App (typography, spacing)
 *  - Apple HIG (depth, shadows, glassmorphism)
 *  - Bootstrap 5 (utility classes)
 *
 * رنگ‌ها: Indigo primary + Emerald success + Rose danger
 * فونت: Vazirmatn (فارسی) + Inter (لاتین)
 * Shadow: layered, soft
 * Border radius: 12px (cards), 8px (inputs), 20px (pills)
 * ═══════════════════════════════════════════════════════════════════════════
 */

/* ─────────── Tokens ─────────── */
:root {
    /* Primary palette */
    --sadaf-primary:        #6366f1;
    --sadaf-primary-hover:  #4f46e5;
    --sadaf-primary-soft:   rgba(99, 102, 241, 0.08);
    --sadaf-primary-ring:   rgba(99, 102, 241, 0.25);

    /* Success */
    --sadaf-success:        #10b981;
    --sadaf-success-hover:  #059669;
    --sadaf-success-soft:   rgba(16, 185, 129, 0.10);

    /* Warning */
    --sadaf-warning:        #f59e0b;
    --sadaf-warning-soft:   rgba(245, 158, 11, 0.10);

    /* Danger */
    --sadaf-danger:         #ef4444;
    --sadaf-danger-hover:   #dc2626;
    --sadaf-danger-soft:    rgba(239, 68, 68, 0.10);

    /* Accent */
    --sadaf-accent:         #ec4899;
    --sadaf-purple:         #8b5cf6;

    /* Neutral scale (slate) */
    --sadaf-bg:             #f8fafc;
    --sadaf-surface:        #ffffff;
    --sadaf-surface-2:      #f1f5f9;
    --sadaf-border:         #e2e8f0;
    --sadaf-border-strong:  #cbd5e1;
    --sadaf-text:           #0f172a;
    --sadaf-text-muted:     #64748b;
    --sadaf-text-subtle:    #94a3b8;

    /* Shadow tokens */
    --sadaf-shadow-sm:      0 1px 2px rgba(15, 23, 42, 0.06);
    --sadaf-shadow:         0 4px 12px rgba(15, 23, 42, 0.08);
    --sadaf-shadow-md:      0 8px 24px rgba(15, 23, 42, 0.10);
    --sadaf-shadow-lg:      0 16px 40px rgba(15, 23, 42, 0.12);
    --sadaf-shadow-glow:    0 0 0 4px var(--sadaf-primary-ring);

    /* Radii */
    --sadaf-radius-sm:      6px;
    --sadaf-radius:         10px;
    --sadaf-radius-md:      14px;
    --sadaf-radius-lg:      20px;
    --sadaf-radius-pill:    9999px;

    /* Spacing scale */
    --sadaf-space-1: 4px;
    --sadaf-space-2: 8px;
    --sadaf-space-3: 12px;
    --sadaf-space-4: 16px;
    --sadaf-space-5: 20px;
    --sadaf-space-6: 24px;
    --sadaf-space-8: 32px;
    --sadaf-space-10: 40px;
    --sadaf-space-12: 48px;

    /* Typography */
    --sadaf-font: 'Vazirmatn', 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --sadaf-font-mono: 'Sarasa Mono SC', 'JetBrains Mono', ui-monospace, monospace;

    /* Transitions */
    --sadaf-tx: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --sadaf-tx-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    --sadaf-header-h: 64px;
    --sadaf-max-width: 1100px;
}

/* Dark mode tokens */
body.dark-mode {
    --sadaf-bg:             #0f172a;
    --sadaf-surface:        #1e293b;
    --sadaf-surface-2:      #334155;
    --sadaf-border:         #334155;
    --sadaf-border-strong:  #475569;
    --sadaf-text:           #f1f5f9;
    --sadaf-text-muted:     #94a3b8;
    --sadaf-text-subtle:    #64748b;

    --sadaf-shadow-sm:      0 1px 2px rgba(0, 0, 0, 0.3);
    --sadaf-shadow:         0 4px 12px rgba(0, 0, 0, 0.35);
    --sadaf-shadow-md:      0 8px 24px rgba(0, 0, 0, 0.40);
    --sadaf-shadow-lg:      0 16px 40px rgba(0, 0, 0, 0.45);
}

/* ─────────── Reset & Base ─────────── */
*, *::before, *::after { box-sizing: border-box; }
body.sadaf-commerce {
    margin: 0;
    padding: 0;
    font-family: var(--sadaf-font);
    background: var(--sadaf-bg);
    color: var(--sadaf-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    direction: rtl;
}

/* ─────────── Modern Top Bar (sticky) ─────────── */
.sadaf-topbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--sadaf-header-h);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--sadaf-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--sadaf-space-6);
}
body.dark-mode .sadaf-topbar {
    background: rgba(15, 23, 42, 0.85);
}
.sadaf-topbar__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--sadaf-text);
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
}
.sadaf-topbar__brand i {
    color: var(--sadaf-primary);
    font-size: 18px;
}
.sadaf-topbar__actions {
    display: flex;
    gap: 6px;
    align-items: center;
}
.sadaf-topbar__action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: transparent;
    color: var(--sadaf-text-muted);
    text-decoration: none;
    border: none;
    border-radius: var(--sadaf-radius);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--sadaf-tx);
    position: relative;
}
.sadaf-topbar__action:hover {
    background: var(--sadaf-surface-2);
    color: var(--sadaf-text);
}
.sadaf-topbar__action--primary {
    background: var(--sadaf-primary-soft);
    color: var(--sadaf-primary);
}
.sadaf-topbar__action--primary:hover {
    background: var(--sadaf-primary);
    color: #fff;
}
.sadaf-topbar__badge {
    position: absolute;
    top: 2px;
    left: 2px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--sadaf-danger);
    color: #fff;
    border-radius: var(--sadaf-radius-pill);
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 2px var(--sadaf-surface);
}

/* ─────────── Layout container ─────────── */
.sadaf-container {
    max-width: var(--sadaf-max-width);
    margin: 0 auto;
    padding: var(--sadaf-space-6) var(--sadaf-space-5) var(--sadaf-space-12);
}

/* ─────────── Page header ─────────── */
.sadaf-page-header {
    margin-bottom: var(--sadaf-space-6);
}
.sadaf-page-header h1 {
    font-size: 24px;
    font-weight: 800;
    margin: 0 0 4px;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
}
.sadaf-page-header h1 i {
    color: var(--sadaf-primary);
}
.sadaf-page-header p {
    color: var(--sadaf-text-muted);
    font-size: 13px;
    margin: 0;
}

/* ─────────── Cards ─────────── */
.sadaf-card {
    background: var(--sadaf-surface);
    border: 1px solid var(--sadaf-border);
    border-radius: var(--sadaf-radius-md);
    box-shadow: var(--sadaf-shadow-sm);
    transition: all var(--sadaf-tx);
}
.sadaf-card--interactive {
    cursor: pointer;
}
.sadaf-card--interactive:hover {
    transform: translateY(-2px);
    box-shadow: var(--sadaf-shadow-md);
    border-color: var(--sadaf-primary);
}
.sadaf-card--accent {
    border-color: var(--sadaf-primary);
    box-shadow: 0 0 0 1px var(--sadaf-primary), var(--sadaf-shadow);
}
.sadaf-card__header {
    padding: var(--sadaf-space-4) var(--sadaf-space-5);
    border-bottom: 1px solid var(--sadaf-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.sadaf-card__header h2 {
    font-size: 14px;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sadaf-card__header h2 i { color: var(--sadaf-primary); }
.sadaf-card__body { padding: var(--sadaf-space-5); }
.sadaf-card__footer {
    padding: var(--sadaf-space-4) var(--sadaf-space-5);
    border-top: 1px solid var(--sadaf-border);
    background: var(--sadaf-surface-2);
    border-radius: 0 0 var(--sadaf-radius-md) var(--sadaf-radius-md);
}

/* ─────────── Buttons ─────────── */
.sadaf-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid transparent;
    border-radius: var(--sadaf-radius);
    font-family: inherit;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.4;
    cursor: pointer;
    transition: all var(--sadaf-tx);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}
.sadaf-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.sadaf-btn--primary {
    background: var(--sadaf-primary);
    color: #fff;
    box-shadow: var(--sadaf-shadow-sm);
}
.sadaf-btn--primary:hover:not(:disabled) {
    background: var(--sadaf-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--sadaf-shadow);
}

.sadaf-btn--success {
    background: var(--sadaf-success);
    color: #fff;
    box-shadow: var(--sadaf-shadow-sm);
}
.sadaf-btn--success:hover:not(:disabled) {
    background: var(--sadaf-success-hover);
    transform: translateY(-1px);
}

.sadaf-btn--danger {
    background: var(--sadaf-danger);
    color: #fff;
}
.sadaf-btn--danger:hover:not(:disabled) {
    background: var(--sadaf-danger-hover);
    transform: translateY(-1px);
}

.sadaf-btn--ghost {
    background: transparent;
    color: var(--sadaf-text-muted);
    border-color: var(--sadaf-border-strong);
}
.sadaf-btn--ghost:hover:not(:disabled) {
    background: var(--sadaf-surface-2);
    color: var(--sadaf-text);
}

.sadaf-btn--soft {
    background: var(--sadaf-primary-soft);
    color: var(--sadaf-primary);
}
.sadaf-btn--soft:hover:not(:disabled) {
    background: var(--sadaf-primary);
    color: #fff;
}

.sadaf-btn--block { width: 100%; }
.sadaf-btn--lg { padding: 14px 24px; font-size: 14px; }
.sadaf-btn--sm { padding: 6px 12px; font-size: 12px; }

/* ─────────── Form fields ─────────── */
.sadaf-field {
    margin-bottom: var(--sadaf-space-4);
}
.sadaf-field__label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--sadaf-text-muted);
    margin-bottom: 6px;
}
.sadaf-field__label .req { color: var(--sadaf-danger); margin-right: 2px; }
.sadaf-input,
.sadaf-textarea,
.sadaf-select {
    width: 100%;
    padding: 10px 12px;
    background: var(--sadaf-surface);
    border: 1px solid var(--sadaf-border-strong);
    border-radius: var(--sadaf-radius);
    color: var(--sadaf-text);
    font-family: inherit;
    font-size: 13px;
    transition: all var(--sadaf-tx);
}
.sadaf-input:focus,
.sadaf-textarea:focus,
.sadaf-select:focus {
    outline: none;
    border-color: var(--sadaf-primary);
    box-shadow: 0 0 0 3px var(--sadaf-primary-ring);
}
.sadaf-textarea { resize: vertical; min-height: 80px; }

/* ─────────── Badges & pills ─────────── */
.sadaf-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--sadaf-radius-pill);
    font-size: 11px;
    font-weight: 700;
    background: var(--sadaf-surface-2);
    color: var(--sadaf-text-muted);
}
.sadaf-badge--success { background: var(--sadaf-success-soft); color: var(--sadaf-success); }
.sadaf-badge--warning { background: var(--sadaf-warning-soft); color: var(--sadaf-warning); }
.sadaf-badge--danger  { background: var(--sadaf-danger-soft); color: var(--sadaf-danger); }
.sadaf-badge--primary { background: var(--sadaf-primary-soft); color: var(--sadaf-primary); }

/* ─────────── Alert / Toast ─────────── */
.sadaf-alert {
    padding: 12px 16px;
    border-radius: var(--sadaf-radius);
    font-size: 13px;
    margin-bottom: var(--sadaf-space-4);
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid;
}
.sadaf-alert--success { background: var(--sadaf-success-soft); border-color: var(--sadaf-success); color: var(--sadaf-success); }
.sadaf-alert--danger  { background: var(--sadaf-danger-soft); border-color: var(--sadaf-danger); color: var(--sadaf-danger); }
.sadaf-alert--info    { background: var(--sadaf-primary-soft); border-color: var(--sadaf-primary); color: var(--sadaf-primary); }
.sadaf-alert--warning { background: var(--sadaf-warning-soft); border-color: var(--sadaf-warning); color: var(--sadaf-warning); }

/* ─────────── Stat cards ─────────── */
.sadaf-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--sadaf-space-3);
    margin-bottom: var(--sadaf-space-6);
}
.sadaf-stat {
    background: var(--sadaf-surface);
    border: 1px solid var(--sadaf-border);
    border-radius: var(--sadaf-radius-md);
    padding: var(--sadaf-space-4);
    box-shadow: var(--sadaf-shadow-sm);
}
.sadaf-stat__icon {
    width: 36px;
    height: 36px;
    border-radius: var(--sadaf-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sadaf-primary-soft);
    color: var(--sadaf-primary);
    font-size: 14px;
    margin-bottom: 10px;
}
.sadaf-stat__value {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
}
.sadaf-stat__label {
    font-size: 11px;
    color: var(--sadaf-text-muted);
    margin-top: 2px;
    font-weight: 500;
}

/* ─────────── Tables ─────────── */
.sadaf-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--sadaf-surface);
    border-radius: var(--sadaf-radius-md);
    overflow: hidden;
    box-shadow: var(--sadaf-shadow-sm);
}
.sadaf-table th,
.sadaf-table td {
    padding: 12px 16px;
    text-align: right;
    font-size: 13px;
    border-bottom: 1px solid var(--sadaf-border);
}
.sadaf-table th {
    background: var(--sadaf-surface-2);
    color: var(--sadaf-text-muted);
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.sadaf-table tbody tr:hover {
    background: var(--sadaf-primary-soft);
}
.sadaf-table tbody tr:last-child td {
    border-bottom: none;
}

/* ─────────── Empty state ─────────── */
.sadaf-empty {
    text-align: center;
    padding: var(--sadaf-space-12) var(--sadaf-space-6);
    color: var(--sadaf-text-muted);
}
.sadaf-empty__icon {
    font-size: 56px;
    color: var(--sadaf-text-subtle);
    opacity: 0.5;
    margin-bottom: var(--sadaf-space-4);
}
.sadaf-empty__title {
    font-size: 16px;
    font-weight: 700;
    color: var(--sadaf-text);
    margin-bottom: var(--sadaf-space-2);
}
.sadaf-empty__text {
    font-size: 13px;
    margin-bottom: var(--sadaf-space-5);
}

/* ─────────── Pagination ─────────── */
.sadaf-pagination {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-top: var(--sadaf-space-6);
}
.sadaf-pagination a {
    padding: 8px 14px;
    border: 1px solid var(--sadaf-border);
    border-radius: var(--sadaf-radius);
    background: var(--sadaf-surface);
    color: var(--sadaf-text);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--sadaf-tx);
}
.sadaf-pagination a:hover {
    border-color: var(--sadaf-primary);
    color: var(--sadaf-primary);
}
.sadaf-pagination a.active {
    background: var(--sadaf-primary);
    color: #fff;
    border-color: var(--sadaf-primary);
}

/* ─────────── Grid helpers ─────────── */
.sadaf-grid { display: grid; gap: var(--sadaf-space-4); }
.sadaf-grid--2 { grid-template-columns: repeat(2, 1fr); }
.sadaf-grid--3 { grid-template-columns: repeat(3, 1fr); }
.sadaf-grid--auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
@media (max-width: 768px) {
    .sadaf-grid--2, .sadaf-grid--3 { grid-template-columns: 1fr; }
}

.sadaf-row { display: flex; gap: var(--sadaf-space-3); align-items: center; flex-wrap: wrap; }
.sadaf-row--between { justify-content: space-between; }

/* ─────────── Divider ─────────── */
.sadaf-divider {
    height: 1px;
    background: var(--sadaf-border);
    margin: var(--sadaf-space-5) 0;
    border: none;
}

/* ─────────── Price tag ─────────── */
.sadaf-price {
    font-size: 18px;
    font-weight: 800;
    color: var(--sadaf-success);
    letter-spacing: -0.02em;
}
.sadaf-price__currency {
    font-size: 11px;
    font-weight: 500;
    color: var(--sadaf-text-muted);
    margin-right: 3px;
}
.sadaf-price__original {
    font-size: 13px;
    color: var(--sadaf-text-subtle);
    text-decoration: line-through;
    margin-right: 6px;
    font-weight: 400;
}

/* ─────────── Skeleton loader ─────────── */
.sadaf-skeleton {
    background: linear-gradient(90deg, var(--sadaf-surface-2) 25%, var(--sadaf-border) 50%, var(--sadaf-surface-2) 75%);
    background-size: 200% 100%;
    animation: sadaf-shimmer 1.5s infinite;
    border-radius: var(--sadaf-radius);
}
@keyframes sadaf-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ─────────── Spinner ─────────── */
.sadaf-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--sadaf-border-strong);
    border-top-color: var(--sadaf-primary);
    border-radius: 50%;
    animation: sadaf-spin 0.8s linear infinite;
    display: inline-block;
}
@keyframes sadaf-spin {
    to { transform: rotate(360deg); }
}

/* ─────────── Toast notification ─────────── */
.sadaf-toast {
    position: fixed;
    top: calc(var(--sadaf-header-h) + 12px);
    right: 50%;
    transform: translateX(50%);
    z-index: 3000;
    padding: 12px 18px;
    border-radius: var(--sadaf-radius-md);
    background: var(--sadaf-surface);
    border: 1px solid var(--sadaf-border);
    box-shadow: var(--sadaf-shadow-lg);
    font-size: 13px;
    font-weight: 600;
    display: none;
    align-items: center;
    gap: 10px;
    max-width: 90vw;
}
.sadaf-toast.show { display: flex; animation: sadaf-slide-down 0.3s ease-out; }
.sadaf-toast--success { border-right: 4px solid var(--sadaf-success); }
.sadaf-toast--success i { color: var(--sadaf-success); }
.sadaf-toast--error { border-right: 4px solid var(--sadaf-danger); }
.sadaf-toast--error i { color: var(--sadaf-danger); }
.sadaf-toast--info { border-right: 4px solid var(--sadaf-primary); }
.sadaf-toast--info i { color: var(--sadaf-primary); }
@keyframes sadaf-slide-down {
    from { transform: translate(50%, -20px); opacity: 0; }
    to { transform: translate(50%, 0); opacity: 1; }
}

/* ─────────── Mobile adjustments ─────────── */
@media (max-width: 640px) {
    .sadaf-topbar { padding: 0 var(--sadaf-space-4); }
    .sadaf-topbar__action span { display: none; }
    .sadaf-container { padding: var(--sadaf-space-4) var(--sadaf-space-3) var(--sadaf-space-10); }
    .sadaf-page-header h1 { font-size: 20px; }
    .sadaf-stats { grid-template-columns: repeat(2, 1fr); }
}