/* =====================================================
   Catálogo — Cupertino Design System
   ===================================================== */

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

/* ── Variables ──────────────────────────────────────── */
:root {
  --bg:          #F2F2F7;
  --surface:     #FFFFFF;
  --surface-2:   #F5F5F7;
  --border:      rgba(0,0,0,.06);
  --text:        #1C1C1E;
  --text-2:      #6E6E73;
  --text-3:      #AEAEB2;
  --accent:      #007AFF;
  --accent-dark: #0062CC;
  --danger:      #FF3B30;
  --success:     #34C759;
  --wa:          #25D366;
  --wa-dark:     #128C7E;
  --radius-xl:   24px;
  --radius-lg:   18px;
  --radius-md:   14px;
  --radius-sm:   10px;
  --radius-pill: 999px;
  --shadow-xs:   0 1px 2px rgba(0,0,0,.04);
  --shadow-sm:   0 1px 3px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.05);
  --shadow-md:   0 4px 20px rgba(0,0,0,.09);
  --shadow-lg:   0 8px 32px rgba(0,0,0,.12);
  --blur:        saturate(180%) blur(20px);
  --transition:  .2s cubic-bezier(.25,.46,.45,.94);
}

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

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
  line-height: 1.5;
}

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

/* ── Navbar glassmorphism ───────────────────────────── */
.navbar-glass {
  background: rgba(255,255,255,.78);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar-glass .navbar-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -.3px;
}
.navbar-glass .back-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--accent);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.navbar-glass .back-btn:hover { background: rgba(0,122,255,.08); }

/* ── Cards iOS ──────────────────────────────────────── */
.card-ios {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  display: block;
  color: inherit;
  text-decoration: none;
}
.card-ios:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: inherit;
}
.card-ios:active {
  transform: scale(.97);
  box-shadow: var(--shadow-xs);
}

/* ── Proporción 4:5 (REGLA DE ORO) ─────────────────── */
.ratio-4-5 {
  aspect-ratio: 4 / 5;
  width: 100%;
  overflow: hidden;
  background: var(--surface-2);
  display: block;
}
.ratio-4-5 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform .4s ease;
}
.card-ios:hover .ratio-4-5 img { transform: scale(1.04); }

/* ── Card body de categoría ─────────────────────────── */
.card-cat-body {
  padding: .9rem 1rem;
}
.card-cat-body .cat-name {
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-cat-body .cat-arrow {
  font-size: .8rem;
  color: var(--text-3);
}

/* ── Card de Producto ───────────────────────────────── */
.card-producto {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.card-producto .prod-body {
  padding: .85rem 1rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: .5rem;
}
.prod-nombre {
  font-size: .92rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
  line-height: 1.3;
}

/* ── Cuota pills ────────────────────────────────────── */
.cuota-pill {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: .45rem .75rem;
  font-size: .8rem;
  color: var(--text-2);
  gap: .5rem;
}
.cuota-pill strong {
  color: var(--text);
  font-weight: 600;
  font-size: .85rem;
}
.cuota-label {
  display: flex;
  align-items: center;
  gap: .35rem;
}
.cuota-icon {
  width: 16px;
  height: 16px;
  opacity: .6;
  flex-shrink: 0;
}
.precio-contado {
  font-size: .85rem;
  color: var(--success);
  font-weight: 600;
}

/* ── Botón WhatsApp ─────────────────────────────────── */
.btn-wa {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  background: var(--wa);
  color: #fff;
  border: 0;
  border-radius: var(--radius-pill);
  font-size: .88rem;
  font-weight: 600;
  padding: .7rem 1rem;
  min-height: 46px;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 8px rgba(37,211,102,.35);
  margin-top: auto;
}
.btn-wa:hover {
  background: var(--wa-dark);
  color: #fff;
  box-shadow: 0 4px 16px rgba(37,211,102,.4);
  transform: translateY(-1px);
}
.btn-wa:active {
  transform: scale(.97);
  box-shadow: none;
}
.btn-wa svg { flex-shrink: 0; }

/* ── Sección título ─────────────────────────────────── */
.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -.4px;
  color: var(--text);
  margin: 0 0 .25rem;
}
.section-subtitle {
  font-size: .88rem;
  color: var(--text-2);
  margin: 0 0 1.25rem;
}

/* ── Badge de categoría ─────────────────────────────── */
.badge-cat {
  display: inline-flex;
  align-items: center;
  background: rgba(0,122,255,.1);
  color: var(--accent);
  border-radius: var(--radius-pill);
  padding: .25rem .75rem;
  font-size: .78rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

/* ── Estado vacío ───────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-2);
}
.empty-state svg {
  opacity: .3;
  margin-bottom: 1rem;
}

/* ── Spinner ────────────────────────────────────────── */
.spinner-ios {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  margin: 3rem auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive tweaks ──────────────────────────────── */
@media (max-width: 400px) {
  .section-title { font-size: 1.2rem; }
  .btn-wa { font-size: .82rem; }
}

/* ── Lightbox ───────────────────────────────────────── */
.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  align-items: center;
  justify-content: center;
  padding: 1rem;
  cursor: zoom-out;
}
.lightbox-overlay.open {
  display: flex;
  animation: lbFadeIn .22s ease;
}
@keyframes lbFadeIn {
  from { opacity:0; }
  to   { opacity:1; }
}
.lightbox-img {
  max-width: min(92vw, 480px);
  max-height: 88dvh;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0,0,0,.6);
  animation: lbZoomIn .25s cubic-bezier(.34,1.56,.64,1);
  cursor: default;
}
@keyframes lbZoomIn {
  from { transform: scale(.82); opacity:0; }
  to   { transform: scale(1);   opacity:1; }
}
.lightbox-close {
  position: fixed;
  top: 1rem;
  right: 1rem;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.18);
  border: 1.5px solid rgba(255,255,255,.25);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition);
  z-index: 2001;
}
.lightbox-close:hover { background: rgba(255,255,255,.3); }

/* Cursor zoom en la imagen del producto */
.ratio-4-5.zoomable { cursor: zoom-in; }

/* ── Admin: estilos básicos ─────────────────────────── */
.admin-sidebar {
  min-height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--border);
}
.admin-sidebar .nav-link {
  color: var(--text-2);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: .9rem;
  padding: .55rem .85rem;
  transition: background var(--transition), color var(--transition);
}
.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
  background: rgba(0,122,255,.08);
  color: var(--accent);
}
.admin-navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

/* Formularios admin */
.form-control-ios {
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  padding: .6rem .85rem;
  font-size: .92rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--surface);
  color: var(--text);
}
.form-control-ios:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,122,255,.12);
  outline: none;
}

.btn-ios-primary {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: var(--radius-pill);
  padding: .65rem 1.4rem;
  font-weight: 600;
  font-size: .9rem;
  transition: background var(--transition), transform var(--transition);
  cursor: pointer;
}
.btn-ios-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-ios-primary:active { transform: scale(.97); }

.btn-ios-danger {
  background: var(--danger);
  color: #fff;
  border: 0;
  border-radius: var(--radius-pill);
  padding: .5rem 1rem;
  font-weight: 600;
  font-size: .85rem;
  cursor: pointer;
  transition: opacity var(--transition);
}
.btn-ios-danger:hover { opacity: .85; color: #fff; }

.btn-ios-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-pill);
  padding: .5rem 1rem;
  font-weight: 500;
  font-size: .85rem;
  cursor: pointer;
  transition: background var(--transition);
}
.btn-ios-secondary:hover { background: var(--border); color: var(--text); }

.table-ios {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--surface);
}
.table-ios thead th {
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: .75rem 1rem;
}
.table-ios tbody td {
  padding: .7rem 1rem;
  vertical-align: middle;
  border-color: var(--border);
  font-size: .88rem;
}
.table-ios tbody tr:last-child td { border-bottom: 0; }

.alert-ios {
  border-radius: var(--radius-md);
  border: 0;
  font-size: .88rem;
  padding: .75rem 1rem;
}
.alert-ios-success { background: rgba(52,199,89,.12); color: #1a7a34; }
.alert-ios-danger  { background: rgba(255,59,48,.1);  color: #c0392b; }

/* Thumb de imagen en tablas */
.img-thumb {
  width: 44px;
  height: 55px; /* 4:5 */
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

/* Preview al subir imagen */
#imgPreview {
  max-height: 200px;
  border-radius: var(--radius-md);
  object-fit: cover;
  display: none;
  margin-top: .75rem;
  box-shadow: var(--shadow-sm);
}