/**
 * کتابخانه کامپوننت UI — سازگار با phase-a / phase-b / app.css
 * کلاس‌ها با پیشوند ui- برای استفاده تدریجی بدون شکستن استایل قدیمی
 */

:root {
  --ui-font: Vazirmatn, Tahoma, system-ui, sans-serif;
  --ui-radius-sm: 8px;
  --ui-radius: 12px;
  --ui-radius-lg: 16px;
  --ui-radius-xl: 20px;
  --ui-radius-pill: 999px;
  --ui-shadow: 0 4px 16px rgba(0, 0, 0, .1);
  --ui-shadow-lg: 0 12px 32px rgba(0, 0, 0, .16);
  --ui-gap: 12px;
  --ui-pad: 16px;
  --ui-transition: .15s ease;
}

/* ——— Stack / Cluster ——— */
.ui-stack { display: flex; flex-direction: column; gap: var(--ui-gap); }
.ui-stack-sm { gap: 8px; }
.ui-stack-lg { gap: 20px; }
.ui-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.ui-row-between {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.ui-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--ui-gap);
}
.ui-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--ui-gap);
}
@media (max-width: 640px) {
  .ui-grid-2, .ui-grid-3 { grid-template-columns: 1fr; }
}
@media (min-width: 641px) and (max-width: 900px) {
  .ui-grid-3 { grid-template-columns: 1fr 1fr; }
}

/* ——— Surface / Card ——— */
.ui-surface {
  background: var(--card, #1e293b);
  border: 1px solid var(--border, rgba(148, 163, 184, .18));
  border-radius: var(--ui-radius-lg);
  padding: var(--ui-pad);
}
.ui-surface-sm { padding: 12px; border-radius: var(--ui-radius); }
.ui-surface-flat {
  background: transparent;
  border: 1px dashed var(--border, rgba(148, 163, 184, .25));
  border-radius: var(--ui-radius);
  padding: var(--ui-pad);
}
.ui-card {
  background: var(--card, #1e293b);
  border: 1px solid var(--border, rgba(148, 163, 184, .18));
  border-radius: var(--ui-radius-lg);
  padding: var(--ui-pad);
  box-shadow: var(--ui-shadow);
  transition: border-color var(--ui-transition), transform var(--ui-transition), box-shadow var(--ui-transition);
}
.ui-card-hover:hover {
  border-color: rgba(59, 130, 246, .35);
  box-shadow: var(--ui-shadow-lg);
  transform: translateY(-1px);
}
.ui-card-hover:active { transform: scale(.99); }

/* ——— Typography ——— */
.ui-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text, #f1f5f9);
}
.ui-title-sm { font-size: 1rem; font-weight: 800; margin: 0; }
.ui-subtitle {
  margin: 4px 0 0;
  font-size: .88rem;
  color: var(--muted, #94a3b8);
  line-height: 1.55;
}
.ui-label {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--muted, #94a3b8);
  margin-bottom: 6px;
}
.ui-hint {
  font-size: .78rem;
  color: var(--muted, #94a3b8);
  line-height: 1.5;
  margin: 6px 0 0;
}
.ui-muted { color: var(--muted, #94a3b8); }
.ui-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ui-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ——— Buttons ——— */
.ui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: var(--ui-radius);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: .9rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none !important;
  cursor: pointer;
  box-sizing: border-box;
  transition: transform var(--ui-transition), filter var(--ui-transition), background var(--ui-transition), border-color var(--ui-transition);
  -webkit-tap-highlight-color: transparent;
}
.ui-btn:active { transform: scale(.97); }
.ui-btn:disabled, .ui-btn.is-disabled {
  opacity: .55;
  cursor: not-allowed;
  pointer-events: none;
}
.ui-btn-primary {
  background: linear-gradient(145deg, #2563eb, #1d4ed8);
  color: #fff !important;
  box-shadow: 0 4px 14px rgba(37, 99, 235, .28);
}
.ui-btn-primary:hover { filter: brightness(1.06); color: #fff !important; }
.ui-btn-secondary {
  background: var(--card, #1e293b);
  color: var(--text, #e2e8f0) !important;
  border-color: var(--border, rgba(148, 163, 184, .25));
}
.ui-btn-secondary:hover {
  border-color: rgba(59, 130, 246, .4);
  color: var(--text, #e2e8f0) !important;
}
.ui-btn-ghost {
  background: transparent;
  color: var(--muted, #94a3b8) !important;
  border-color: transparent;
}
.ui-btn-ghost:hover {
  background: rgba(148, 163, 184, .08);
  color: var(--text, #e2e8f0) !important;
}
.ui-btn-danger {
  background: #b91c1c;
  color: #fff !important;
}
.ui-btn-success {
  background: #059669;
  color: #fff !important;
}
.ui-btn-sm {
  min-height: 36px;
  padding: 7px 12px;
  font-size: .82rem;
  border-radius: 10px;
}
.ui-btn-lg {
  min-height: 52px;
  padding: 14px 20px;
  font-size: 1rem;
  border-radius: var(--ui-radius-lg);
}
.ui-btn-block { width: 100%; }
.ui-btn-icon {
  width: 44px;
  min-height: 44px;
  padding: 0;
  border-radius: var(--ui-radius);
}
.ui-btn-ico {
  display: inline-flex;
  width: 20px;
  height: 20px;
  align-items: center;
  justify-content: center;
}

/* ——— Form controls ——— */
.ui-field { margin-bottom: 14px; }
.ui-input,
.ui-select,
.ui-textarea {
  width: 100%;
  box-sizing: border-box;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: var(--ui-radius);
  border: 1px solid var(--border, rgba(148, 163, 184, .25));
  background: var(--bg, #0f172a);
  color: var(--text, #e2e8f0);
  font-family: inherit;
  font-size: .92rem;
  transition: border-color var(--ui-transition), box-shadow var(--ui-transition);
}
.ui-textarea { min-height: 110px; resize: vertical; line-height: 1.6; }
.ui-input:focus,
.ui-select:focus,
.ui-textarea:focus {
  outline: none;
  border-color: rgba(59, 130, 246, .55);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, .15);
}
.ui-input.is-error,
.ui-select.is-error,
.ui-textarea.is-error {
  border-color: #f87171;
}
.ui-field-error {
  font-size: .78rem;
  color: #f87171;
  margin-top: 5px;
}

/* ——— Badge / Chip / Tag ——— */
.ui-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--ui-radius-pill);
  font-size: .72rem;
  font-weight: 800;
  line-height: 1.3;
  white-space: nowrap;
}
.ui-badge-primary { background: rgba(59, 130, 246, .15); color: #93c5fd; }
.ui-badge-success { background: rgba(16, 185, 129, .15); color: #6ee7b7; }
.ui-badge-warning { background: rgba(251, 191, 36, .15); color: #fcd34d; }
.ui-badge-danger { background: rgba(239, 68, 68, .15); color: #fca5a5; }
.ui-badge-muted { background: rgba(148, 163, 184, .12); color: #94a3b8; }
.ui-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--ui-radius-pill);
  border: 1px solid var(--border, rgba(148, 163, 184, .2));
  background: var(--card, #1e293b);
  color: var(--muted, #94a3b8);
  font-size: .82rem;
  font-weight: 700;
  text-decoration: none !important;
  cursor: pointer;
  transition: border-color var(--ui-transition), color var(--ui-transition), background var(--ui-transition);
}
.ui-chip:hover, .ui-chip.is-active {
  border-color: rgba(59, 130, 246, .45);
  color: #e2e8f0;
  background: rgba(59, 130, 246, .1);
}

/* ——— Alert ——— */
.ui-alert {
  padding: 12px 14px;
  border-radius: var(--ui-radius);
  font-size: .88rem;
  line-height: 1.65;
  border: 1px solid transparent;
  margin-bottom: 12px;
}
.ui-alert-success {
  background: rgba(16, 185, 129, .12);
  border-color: rgba(16, 185, 129, .25);
  color: #6ee7b7;
}
.ui-alert-error {
  background: rgba(239, 68, 68, .12);
  border-color: rgba(239, 68, 68, .25);
  color: #fca5a5;
}
.ui-alert-warning {
  background: rgba(251, 191, 36, .12);
  border-color: rgba(251, 191, 36, .25);
  color: #fcd34d;
}
.ui-alert-info {
  background: rgba(59, 130, 246, .12);
  border-color: rgba(59, 130, 246, .25);
  color: #93c5fd;
}

/* ——— Empty state ——— */
.ui-empty {
  text-align: center;
  padding: 40px 20px;
  border: 1px dashed var(--border, rgba(148, 163, 184, .25));
  border-radius: var(--ui-radius-lg);
  background: var(--card, #1e293b);
}
.ui-empty-ico {
  font-size: 2.4rem;
  margin-bottom: 10px;
  opacity: .7;
}
.ui-empty-title {
  font-weight: 800;
  font-size: 1rem;
  margin: 0 0 6px;
}
.ui-empty-desc {
  font-size: .88rem;
  color: var(--muted, #94a3b8);
  margin: 0 0 14px;
  line-height: 1.6;
}

/* ——— Section header ——— */
.ui-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 8px 0 12px;
}
.ui-section-head h2,
.ui-section-head .ui-title-sm {
  margin: 0;
}
.ui-link {
  color: #60a5fa !important;
  text-decoration: none !important;
  font-size: .85rem;
  font-weight: 700;
}
.ui-link:hover { text-decoration: underline !important; }

/* ——— Divider ——— */
.ui-divider {
  height: 1px;
  border: 0;
  background: var(--border, rgba(148, 163, 184, .18));
  margin: 16px 0;
}

/* ——— Avatar ——— */
.ui-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  background: rgba(59, 130, 246, .15);
  color: #93c5fd;
  flex-shrink: 0;
  object-fit: cover;
}
.ui-avatar-sm { width: 32px; height: 32px; font-size: .85rem; }
.ui-avatar-lg { width: 64px; height: 64px; font-size: 1.4rem; }

/* ——— List row (settings / menu) ——— */
.ui-list {
  border: 1px solid var(--border, rgba(148, 163, 184, .18));
  border-radius: var(--ui-radius-lg);
  overflow: hidden;
  background: var(--card, #1e293b);
}
.ui-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  text-decoration: none !important;
  color: inherit !important;
  border-bottom: 1px solid var(--border, rgba(148, 163, 184, .12));
  transition: background var(--ui-transition);
  min-height: 52px;
}
.ui-list-item:last-child { border-bottom: 0; }
.ui-list-item:active { background: rgba(148, 163, 184, .06); }
.ui-list-item .ui-list-body { flex: 1; min-width: 0; }
.ui-list-item .ui-list-title { font-weight: 700; font-size: .92rem; }
.ui-list-item .ui-list-desc { font-size: .78rem; color: var(--muted, #94a3b8); margin-top: 2px; }
.ui-list-item .ui-list-chevron {
  color: var(--muted, #94a3b8);
  font-size: 1.1rem;
}

/* ——— Bottom sheet ——— */
.ui-sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .55);
  z-index: 1100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--ui-transition);
}
.ui-sheet-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}
.ui-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1101;
  background: var(--card, #1e293b);
  border-radius: 20px 20px 0 0;
  border: 1px solid var(--border, rgba(148, 163, 184, .2));
  border-bottom: 0;
  padding: 12px 16px calc(16px + env(safe-area-inset-bottom, 0px));
  max-height: min(88dvh, 88vh);
  overflow: auto;
  transform: translateY(105%);
  transition: transform .22s ease;
  box-shadow: 0 -12px 40px rgba(0, 0, 0, .25);
}
.ui-sheet.is-open { transform: translateY(0); }
.ui-sheet-handle {
  width: 40px;
  height: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, .35);
  margin: 0 auto 14px;
}
.ui-sheet-title {
  font-weight: 800;
  font-size: 1.05rem;
  margin: 0 0 12px;
  text-align: center;
}

/* ——— Sticky bottom action bar ——— */
.ui-sticky-actions {
  position: sticky;
  bottom: calc(var(--bn-total, 64px) + 8px);
  z-index: 40;
  display: flex;
  gap: 8px;
  padding: 10px;
  background: color-mix(in srgb, var(--card, #1e293b) 92%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border, rgba(148, 163, 184, .18));
  border-radius: var(--ui-radius-lg);
  box-shadow: var(--ui-shadow-lg);
}
@media (min-width: 900px) {
  .ui-sticky-actions {
    position: static;
    bottom: auto;
    margin-top: 16px;
  }
}

/* ——— Tabs ——— */
.ui-tabs {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.ui-tabs::-webkit-scrollbar { display: none; }
.ui-tab {
  flex: 0 0 auto;
  padding: 9px 14px;
  border-radius: var(--ui-radius-pill);
  border: 1px solid var(--border, rgba(148, 163, 184, .2));
  background: var(--card, #1e293b);
  color: var(--muted, #94a3b8);
  font-size: .82rem;
  font-weight: 700;
  text-decoration: none !important;
  white-space: nowrap;
}
.ui-tab.is-active {
  background: #0d9488;
  border-color: #0d9488;
  color: #fff;
}

/* ——— Spinner ——— */
.ui-spinner {
  width: 22px;
  height: 22px;
  border: 2px solid rgba(148, 163, 184, .25);
  border-top-color: #60a5fa;
  border-radius: 50%;
  animation: ui-spin .7s linear infinite;
  display: inline-block;
}
@keyframes ui-spin { to { transform: rotate(360deg); } }

/* ——— Light theme tweaks ——— */
html[data-theme="light"] .ui-card,
html[data-theme="light"] .ui-surface,
html[data-theme="light"] .ui-list,
html[data-theme="light"] .ui-empty,
body.theme-light .ui-card,
body.theme-light .ui-surface {
  background: #fff;
  border-color: rgba(15, 23, 42, .08);
}
html[data-theme="light"] .ui-input,
html[data-theme="light"] .ui-select,
html[data-theme="light"] .ui-textarea,
body.theme-light .ui-input {
  background: #f8fafc;
  color: #0f172a;
  border-color: rgba(15, 23, 42, .12);
}
html[data-theme="light"] .ui-title,
body.theme-light .ui-title { color: #0f172a; }

/* ارتقای کارت و سطح — نسخه مدرن */
.ui-surface {
  background:
    linear-gradient(180deg, rgba(255,255,255,.03), transparent 40%),
    var(--card, #1e293b);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.ui-list {
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
}
.ui-btn-primary {
  background: linear-gradient(145deg, #3b82f6, #1d4ed8) !important;
}
.ui-chip.is-active {
  box-shadow: 0 0 0 2px rgba(59,130,246,.2);
}