/* ================================================================
   KBM UX & Design System — v1.6.0-beta-ux-design-system
   Inspired by Divar/Bama card layout + Iranian RTL best practices
   ================================================================ */

/* ── TOKENS ──────────────────────────────────────────── */
:root {
  --kbm-yellow:#f5c400; --kbm-yellow-light:#fff8d6; --kbm-yellow-dark:#d4a800;
  --kbm-navy:#111827; --kbm-ink:#0f172a; --kbm-muted:#64748b;
  --kbm-success:#16a34a; --kbm-danger:#dc2626; --kbm-info:#0ea5e9;
  --kbm-card:#fff; --kbm-bg:#f8fafc; --kbm-line:#e2e8f0;
  --kbm-radius:16px; --kbm-radius-sm:10px; --kbm-radius-xs:6px;
  --kbm-shadow:0 4px 24px rgba(15,23,42,.09);
  --kbm-shadow-hover:0 8px 32px rgba(15,23,42,.16);
  --kbm-transition:.18s ease;
  --kbm-font:'IRANSansX','IRANSansX','Tahoma',sans-serif;
  --kbm-float-z:9000;
}

/* ── FILTER BAR ─────────────────────────────────────── */
.kbm-uds-filter-bar {
  position: sticky; top: 0; z-index: 400;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--kbm-line);
  padding: 10px 16px;
}
.kbm-uds-filter-bar__inner {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  max-width: 1200px; margin: 0 auto;
  direction: rtl;
}
.kbm-uds-filter-bar__label {
  font-size: 12px; color: var(--kbm-muted); margin-left: 4px;
  white-space: nowrap;
}
.kbm-uds-filter-bar__select {
  font-family: var(--kbm-font); font-size: 14px;
  border: 1px solid var(--kbm-line); border-radius: var(--kbm-radius-sm);
  padding: 7px 12px; background: var(--kbm-card); color: var(--kbm-ink);
  cursor: pointer; min-width: 130px; direction: rtl;
  transition: border-color var(--kbm-transition);
}
.kbm-uds-filter-bar__select:focus {
  border-color: var(--kbm-yellow); outline: none;
  box-shadow: 0 0 0 3px rgba(245,196,0,.25);
}
.kbm-uds-filter-bar__active {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
}
.kbm-uds-active-chip {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--kbm-yellow-light); border: 1px solid var(--kbm-yellow-dark);
  border-radius: 999px; padding: 3px 10px; font-size: 12px;
  color: var(--kbm-navy); cursor: pointer;
}
.kbm-uds-active-chip:hover { background: var(--kbm-yellow); }
.kbm-uds-filter-bar__reset {
  margin-right: auto; font-size: 12px; color: var(--kbm-danger);
  background: none; border: none; cursor: pointer; padding: 4px 8px;
  border-radius: var(--kbm-radius-xs); transition: background var(--kbm-transition);
}
.kbm-uds-filter-bar__reset:hover { background: #fee2e2; }

/* ── BUTTONS (shared) ───────────────────────────────── */
.kbm-uds-btn {
  font-family: var(--kbm-font); font-size: 14px; font-weight: 700;
  border: none; border-radius: var(--kbm-radius-sm);
  padding: 9px 20px; cursor: pointer;
  transition: background var(--kbm-transition), transform var(--kbm-transition);
  white-space: nowrap;
}
.kbm-uds-btn--primary {
  background: var(--kbm-yellow); color: var(--kbm-navy);
}
.kbm-uds-btn--primary:hover:not(:disabled) {
  background: var(--kbm-yellow-dark); transform: translateY(-1px);
}
.kbm-uds-btn--primary:disabled { opacity: .4; cursor: not-allowed; }
.kbm-uds-btn--ghost {
  background: rgba(255,255,255,.15); color: #fff; border: 1px solid rgba(255,255,255,.3);
}
.kbm-uds-btn--ghost:hover { background: rgba(255,255,255,.25); }

/* ── FLOATING CTA ───────────────────────────────────── */
.kbm-uds-float-cta {
  display: none;
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  z-index: var(--kbm-float-z);
  direction: rtl;
}
@media (max-width: 767px) {
  .kbm-uds-float-cta { display: flex; gap: 10px; }
  body { padding-bottom: 80px; }
}
.kbm-uds-float-cta__btn {
  display: flex; align-items: center; gap: 7px;
  padding: 12px 20px; border-radius: 999px;
  font-family: var(--kbm-font); font-weight: 700; font-size: 14px;
  text-decoration: none; box-shadow: 0 4px 18px rgba(0,0,0,.25);
  transition: transform .16s ease, box-shadow .16s ease;
  white-space: nowrap;
}
.kbm-uds-float-cta__btn:hover { transform: translateY(-2px); box-shadow: 0 7px 24px rgba(0,0,0,.3); }
.kbm-uds-float-cta__btn svg { width: 18px; height: 18px; flex-shrink: 0; fill: currentColor; }
.kbm-uds-float-cta__btn--call  { background: #16a34a; color: #fff; }
.kbm-uds-float-cta__btn--wa    { background: #25D366; color: #fff; }
.kbm-uds-float-cta__btn--tg    { background: #229ED9; color: #fff; }

/* ── RELATED ADS ────────────────────────────────────── */
.kbm-uds-related { margin: 32px 0; direction: rtl; }
.kbm-uds-related__title {
  font-size: 18px; font-weight: 800; color: var(--kbm-ink);
  margin-bottom: 16px; padding-bottom: 10px;
  border-bottom: 2px solid var(--kbm-yellow);
  display: inline-block;
}
.kbm-uds-related__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}
.kbm-uds-related__card {
  display: flex; flex-direction: column;
  background: var(--kbm-card); border: 1px solid var(--kbm-line);
  border-radius: var(--kbm-radius); overflow: hidden;
  text-decoration: none; color: var(--kbm-ink);
  transition: transform var(--kbm-transition), box-shadow var(--kbm-transition), border-color var(--kbm-transition);
  box-shadow: var(--kbm-shadow);
}
.kbm-uds-related__card:hover {
  transform: translateY(-3px); box-shadow: var(--kbm-shadow-hover);
  border-color: var(--kbm-yellow);
}
.kbm-uds-related__img {
  aspect-ratio: 4/3; overflow: hidden; background: var(--kbm-bg);
}
.kbm-uds-related__img img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .35s ease;
}
.kbm-uds-related__card:hover .kbm-uds-related__img img { transform: scale(1.04); }
.kbm-uds-related__img--placeholder { position: relative; }
.kbm-uds-related__img--placeholder::after {
  content: '🏗️'; position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 36px; opacity: .25;
}
.kbm-uds-related__body { padding: 10px 12px; flex: 1; }
.kbm-uds-related__name {
  font-size: 13px; font-weight: 600; line-height: 1.5;
  margin: 0 0 4px; display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.kbm-uds-related__price {
  font-size: 12px; color: var(--kbm-success); font-weight: 700; margin: 0;
}

/* ── TOAST NOTIFICATIONS ────────────────────────────── */
.kbm-uds-toast-container {
  position: fixed; bottom: 24px; right: 24px; z-index: calc(var(--kbm-float-z) + 100);
  display: flex; flex-direction: column; gap: 10px; direction: rtl;
  pointer-events: none;
}
.kbm-uds-toast {
  display: flex; align-items: center; gap: 10px;
  background: var(--kbm-navy); color: #fff;
  padding: 12px 18px; border-radius: var(--kbm-radius);
  font-size: 14px; font-weight: 600;
  box-shadow: 0 8px 28px rgba(0,0,0,.22);
  pointer-events: auto;
  animation: kbm-toast-in .28s ease forwards;
}
.kbm-uds-toast--success { border-right: 4px solid #4ade80; }
.kbm-uds-toast--error   { border-right: 4px solid #f87171; }
.kbm-uds-toast--info    { border-right: 4px solid var(--kbm-yellow); }
.kbm-uds-toast--out { animation: kbm-toast-out .22s ease forwards; }
@keyframes kbm-toast-in  { from { opacity:0; transform:translateX(20px); } to { opacity:1; transform:translateX(0); } }
@keyframes kbm-toast-out { from { opacity:1; transform:translateX(0);    } to { opacity:0; transform:translateX(20px); } }

/* ── SKELETON LOADING ───────────────────────────────── */
.kbm-uds-skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: kbm-skeleton-wave 1.4s infinite linear;
  border-radius: var(--kbm-radius-sm);
}
@keyframes kbm-skeleton-wave { 0%{background-position:200% 0} 100%{background-position:-200% 0} }
.kbm-uds-skeleton-card {
  border: 1px solid var(--kbm-line); border-radius: var(--kbm-radius);
  overflow: hidden; background: var(--kbm-card);
}
.kbm-uds-skeleton-card__img { aspect-ratio:4/3; }
.kbm-uds-skeleton-card__body { padding: 12px; }
.kbm-uds-skeleton-card__line { height: 12px; margin-bottom: 8px; }
.kbm-uds-skeleton-card__line--short { width: 60%; }

/* ── HEALTH ─────────────────────────────────────────── */
.kbm-uds-health {
  background: #fff; border: 1px solid var(--kbm-line); border-radius: var(--kbm-radius);
  padding: 16px; font-family: var(--kbm-font); direction: rtl; margin: 16px 0;
}
.kbm-uds-health table { width: 100%; border-collapse: collapse; }
.kbm-uds-health td { padding: 6px 10px; border-bottom: 1px solid var(--kbm-line); font-size: 13px; }

/* ── RESPONSIVE OVERRIDES ───────────────────────────── */
@media (max-width: 640px) {
  .kbm-uds-filter-bar__select { min-width: 110px; font-size: 13px; }
  .kbm-uds-related__grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .kbm-uds-toast-container { right: 12px; bottom: 90px; left: 12px; }
}