/* =====================================================
   Multitiendas Web — Design tokens basados en Stitch
   Paleta: Trust Blue + Energetic Amber
   ===================================================== */

:root {
  /* Primary — Trust Blue */
  --primary:              #00438f;
  --on-primary:           #ffffff;
  --primary-container:    #285baa;
  --on-primary-container: #c4d6ff;
  --primary-fixed:        #d7e2ff;
  --primary-fixed-dim:    #acc7ff;
  --inverse-primary:      #acc7ff;

  /* Secondary — Energetic Amber */
  --secondary:              #8c5000;
  --on-secondary:           #ffffff;
  --secondary-container:    #fe9400;
  --on-secondary-container: #633700;

  /* Tertiary — Teal */
  --tertiary:           #004c58;
  --tertiary-container: #006675;

  /* Surface */
  --background:                  #f8f9ff;
  --on-background:               #0b1c30;
  --surface:                     #f8f9ff;
  --surface-container-lowest:    #ffffff;
  --surface-container-low:       #eff4ff;
  --surface-container:           #e5eeff;
  --surface-container-high:      #dce9ff;
  --surface-container-highest:   #d3e4fe;
  --surface-dim:                 #cbdbf5;
  --inverse-surface:             #213145;
  --inverse-on-surface:          #eaf1ff;

  /* Text & outline */
  --on-surface:         #0b1c30;
  --on-surface-variant: #434751;
  --outline:            #737782;
  --outline-variant:    #c3c6d3;
  --border-subtle:      #e2e8f0;

  /* Semantic */
  --error:           #ba1a1a;
  --error-container: #ffdad6;
  --sale-accent:     #f59e0b;
  --success:         #1a6b3c;
  --success-container: #c8f5d7;

  /* Spacing */
  --spacing-xs:  4px;
  --spacing-sm:  8px;
  --spacing-md:  16px;
  --spacing-lg:  24px;
  --spacing-xl:  32px;
  --spacing-2xl: 48px;

  /* Radius */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--background);
  color: var(--on-surface);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

/* ── Utilities ── */
.text-primary       { color: var(--primary) !important; }
.text-secondary     { color: var(--secondary-container) !important; }
.text-muted         { color: var(--on-surface-variant) !important; }
.bg-primary         { background-color: var(--primary) !important; }
.bg-surface         { background-color: var(--surface-container-lowest) !important; }
.bg-surface-low     { background-color: var(--surface-container-low) !important; }

/* ── Input field ── */
.input-field {
  width: 100%;
  padding: 0.625rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}
.input-field:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent);
}
.input-field::placeholder { color: var(--outline); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.15s;
  user-select: none;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}
.btn-primary:hover { background: var(--primary-container); }

.btn-secondary {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}
.btn-secondary:hover { filter: brightness(0.92); }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-fixed); }

.btn-ghost {
  background: transparent;
  color: var(--on-surface-variant);
}
.btn-ghost:hover { background: var(--surface-container); }

.btn-danger {
  background: var(--error);
  color: #fff;
}

.btn-sm { padding: 0.375rem 0.875rem; font-size: 0.875rem; }
.btn-lg { padding: 0.875rem 1.75rem; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }
.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius-full);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--on-surface-variant);
  transition: background 0.15s;
  display: inline-flex;
  align-items: center;
}
.btn-icon:hover { background: var(--surface-container); }

/* ── Cards ── */
.card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.card-body { padding: var(--spacing-md); }

/* Product card */
.product-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.2s;
}
.product-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-3px); }
.product-card__img {
  aspect-ratio: 1;
  width: 100%;
  object-fit: cover;
  background: var(--surface-container);
  transition: transform 0.3s;
}
.product-card:hover .product-card__img { transform: scale(1.05); }
.product-card__body { padding: var(--spacing-md); }
.product-card__name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--on-surface);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 var(--spacing-xs);
}
.product-card__price {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary);
}
.product-card__badge {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge-popular { background: var(--secondary-container); color: var(--on-secondary-container); }
.badge-new     { background: var(--primary); color: var(--on-primary); }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface-container-lowest);
  border-bottom: 1px solid var(--border-subtle);
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  transition: box-shadow 0.2s;
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.site-header__inner {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}
.site-logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.site-logo span { color: var(--secondary-container); }

.site-nav { display: flex; gap: var(--spacing-md); }
.site-nav a {
  color: var(--on-surface-variant);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.site-nav a:hover, .site-nav a.active {
  color: var(--primary);
  border-color: var(--primary);
}

/* ── Footer ── */
.site-footer {
  background: var(--surface-container-low);
  border-top: 1px solid var(--border-subtle);
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}
.site-footer__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
}
.site-footer h4 { font-size: 0.875rem; font-weight: 700; color: var(--on-surface); margin: 0 0 var(--spacing-md); text-transform: uppercase; letter-spacing: 0.05em; }
.site-footer a { display: block; color: var(--on-surface-variant); text-decoration: none; font-size: 0.9375rem; padding: 3px 0; transition: color 0.15s; }
.site-footer a:hover { color: var(--primary); }
.site-footer__copy { max-width: 1280px; margin: var(--spacing-xl) auto 0; padding-top: var(--spacing-md); border-top: 1px solid var(--border-subtle); text-align: center; font-size: 0.875rem; color: var(--on-surface-variant); }

/* ── Hero ── */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  color: var(--on-primary);
  padding: var(--spacing-2xl) var(--spacing-lg);
  overflow: hidden;
}
.hero__inner { max-width: 1280px; margin: 0 auto; position: relative; z-index: 1; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; letter-spacing: -0.02em; margin: 0 0 var(--spacing-md); line-height: 1.1; }
.hero p { font-size: 1.125rem; opacity: 0.9; margin: 0 0 var(--spacing-xl); max-width: 560px; }
.hero__deco {
  position: absolute;
  right: -80px; top: -80px;
  width: 360px; height: 360px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
}

/* ── Section ── */
.section { padding: var(--spacing-2xl) var(--spacing-lg); }
.section__inner { max-width: 1280px; margin: 0 auto; }
.section-title { font-size: 1.5rem; font-weight: 700; color: var(--on-surface); margin: 0 0 var(--spacing-lg); }

/* ── Products grid ── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

/* ── Category chips ── */
.cat-chips { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); }
.cat-chip {
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-decoration: none;
  display: inline-block;
  background: var(--surface-container);
  color: var(--on-surface-variant);
}
.cat-chip:hover, .cat-chip.active {
  background: var(--primary);
  color: var(--on-primary);
}

/* ── Loyalty card ── */
.loyalty-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 60%, var(--tertiary-container) 100%);
  color: var(--on-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  position: relative;
  overflow: hidden;
}
.loyalty-card__deco {
  position: absolute;
  right: -40px; top: -40px;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
}
.loyalty-card__level {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-bottom: var(--spacing-xs);
}
.loyalty-card__points {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}
.loyalty-card__number {
  font-size: 0.875rem;
  opacity: 0.75;
  margin-top: var(--spacing-md);
  letter-spacing: 0.08em;
}

/* Progress bar */
.progress-bar {
  background: rgba(255,255,255,0.25);
  border-radius: var(--radius-full);
  height: 6px;
  margin: var(--spacing-sm) 0;
  overflow: hidden;
}
.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--secondary-container);
  transition: width 0.6s ease;
}

/* ── Alerts / messages ── */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}
.alert-success { background: var(--success-container); color: var(--success); border-left: 3px solid var(--success); }
.alert-error   { background: var(--error-container); color: var(--error); border-left: 3px solid var(--error); }
.alert-info    { background: var(--primary-fixed); color: var(--primary); border-left: 3px solid var(--primary); }

/* ── Breadcrumb ── */
.breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 0.875rem; color: var(--on-surface-variant); flex-wrap: wrap; }
.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* ── Store card ── */
.store-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
  display: block;
  color: var(--on-surface);
}
.store-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.store-card__name { font-size: 1.125rem; font-weight: 700; color: var(--primary); margin: 0 0 var(--spacing-xs); }
.store-card__info { font-size: 0.9rem; color: var(--on-surface-variant); display: flex; align-items: center; gap: 4px; margin: 4px 0; }

/* ── Form layout ── */
.form-group { margin-bottom: var(--spacing-md); }
.form-label { display: block; font-size: 0.875rem; font-weight: 600; color: var(--on-surface); margin-bottom: var(--spacing-xs); }
.form-error { font-size: 0.8125rem; color: var(--error); margin-top: 4px; }

/* ── Quantity control ── */
.qty-control {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.qty-control button {
  width: 40px;
  height: 44px;
  border: none;
  background: var(--surface-container);
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--on-surface);
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qty-control button:hover { background: var(--surface-container-high); }
.qty-control__value { min-width: 2.5rem; text-align: center; font-weight: 700; font-size: 1rem; }

/* ── Mobile bottom nav ── */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 50;
  background: var(--surface-container-lowest);
  border-top: 1px solid var(--border-subtle);
  padding: 8px 0 env(safe-area-inset-bottom, 8px);
}
@media (max-width: 767px) {
  .mobile-nav { display: flex; }
  .desktop-nav { display: none !important; }
  body { padding-bottom: 72px; }
}
.mobile-nav a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-decoration: none;
  color: var(--on-surface-variant);
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 4px;
  transition: color 0.15s;
}
.mobile-nav a.active, .mobile-nav a:hover { color: var(--primary); }
.mobile-nav .material-symbols-outlined { font-size: 24px; }

/* ── Misc ── */
.divider { height: 1px; background: var(--border-subtle); margin: var(--spacing-lg) 0; }
.tag { display: inline-flex; align-items: center; padding: 2px 10px; border-radius: var(--radius-full); font-size: 0.8125rem; font-weight: 600; }
.tag-amber { background: #fff3cd; color: #7c4a00; }
.tag-blue  { background: var(--primary-fixed); color: var(--primary); }
.tag-green { background: var(--success-container); color: var(--success); }

/* ── Auth pages ── */
.auth-container {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
}
.auth-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl) var(--spacing-2xl);
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-lg);
}
@media (max-width: 520px) {
  .auth-card { padding: var(--spacing-lg) var(--spacing-md); }
}

/* Tailwind-compatible spacing helpers */
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.text-center { text-align: center; }
.w-full { width: 100%; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.opacity-75 { opacity: 0.75; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.rounded { border-radius: var(--radius-md); }
.rounded-full { border-radius: var(--radius-full); }
.p-4 { padding: 16px; }
.px-4 { padding-left: 16px; padding-right: 16px; }
.py-2 { padding-top: 8px; padding-bottom: 8px; }
.grid { display: grid; }