:root {
  /* Paleta corporativa de Promo Ópticas, tomada directamente del logo:
     negro + amarillo/dorado sobre blanco. */
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-ink: #171717;
  --color-ink-soft: #5c5c58;
  --color-primary: #171717;
  --color-primary-dark: #000000;
  --color-accent: #f7b500;
  --color-accent-dark: #a9750a;
  --color-accent-tint: #fdf3d9;
  --color-border: #e7e3d9;
  --color-success-bg: #e6f4ea;
  --color-success-text: #1e6b3a;
  --color-error-bg: #fbe9e7;
  --color-error-text: #a63d2f;
  --color-warning-bg: #fdf2e0;
  --color-warning-text: #8a5a12;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(23, 23, 23, 0.08);
  --max-width: 1180px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* -------------------- Header -------------------- */

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 1px 0 var(--color-accent);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  gap: 20px;
  flex-wrap: wrap;
}

.logo {
  display: inline-flex;
  align-items: center;
}
.logo img { height: 40px; width: auto; display: block; }

.footer-logo { height: 36px; width: auto; display: block; margin-bottom: 14px; }

.main-nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.main-nav a {
  color: var(--color-ink-soft);
  font-weight: 600;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--color-ink);
  border-bottom-color: var(--color-accent);
}

.header-actions { display: flex; align-items: center; gap: 16px; }

.cart-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  padding: 9px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
}
.cart-link:hover { background: var(--color-primary-dark); }
.cart-badge {
  background: var(--color-accent);
  color: var(--color-ink);
  border-radius: 999px;
  min-width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0 5px;
}

/* -------------------- Hero -------------------- */

.hero {
  background: linear-gradient(135deg, #000000 0%, #1c1c1a 65%, #2a2410 100%);
  color: #fff;
  padding: 56px 0;
  margin-bottom: 36px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -80px; top: -80px;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247,181,0,0.22), transparent 70%);
  pointer-events: none;
}
.hero h1 { font-size: 2.2rem; margin: 0 0 12px; max-width: 640px; }
.hero p { font-size: 1.05rem; opacity: 0.85; max-width: 560px; margin: 0 0 22px; }
.hero .btn { background: var(--color-accent); color: #171717; border: none; }
.hero .btn:hover { background: #ffcb33; }
.hero .steps {
  display: flex;
  gap: 28px;
  margin-top: 34px;
  flex-wrap: wrap;
}
.hero .step { max-width: 220px; font-size: 0.9rem; opacity: 0.9; }
.hero .step b { display: block; font-size: 1.5rem; color: var(--color-accent); margin-bottom: 4px; }

/* -------------------- Buttons & forms -------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.05s ease, background 0.15s ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-secondary { background: transparent; color: var(--color-primary-dark); border-color: var(--color-primary-dark); }
.btn-secondary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-outline { background: #fff; color: var(--color-ink); border-color: var(--color-border); }
.btn-outline:hover { border-color: var(--color-accent-dark); color: var(--color-accent-dark); }
.btn-accent { background: var(--color-accent); color: var(--color-ink); }
.btn-accent:hover { background: #ffcb33; }
.btn-block { width: 100%; }
.btn-sm { padding: 7px 14px; font-size: 0.85rem; border-radius: 8px; }
.btn-danger { background: var(--color-error-text); color: #fff; }

label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 6px; color: var(--color-ink); }
.field { margin-bottom: 18px; }
.field-hint { font-size: 0.8rem; color: var(--color-ink-soft); margin-top: 4px; }
.field.has-error label { color: var(--color-error-text); }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--color-error-text); }

input[type="text"], input[type="email"], input[type="tel"], input[type="number"],
input[type="password"], input[type="file"], select, textarea {
  width: 100%;
  padding: 11px 13px;
  border-radius: 9px;
  border: 1px solid var(--color-border);
  background: #fff;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }

.row { display: flex; gap: 16px; flex-wrap: wrap; }
.row > .field { flex: 1 1 220px; }

.radio-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 12px;
  cursor: pointer;
  background: #fff;
}
.radio-card input { margin-top: 3px; width: auto; }
.radio-card.selected { border-color: var(--color-primary); box-shadow: 0 0 0 1px var(--color-primary); }
.radio-card strong { display: block; margin-bottom: 3px; }
.radio-card small { color: var(--color-ink-soft); }
.radio-card.disabled { opacity: 0.45; cursor: not-allowed; background: var(--color-bg); }
.radio-card.disabled strong { color: var(--color-ink-soft); }

/* -------------------- Flash messages -------------------- */

.flash-list { list-style: none; margin: 18px 0 0; padding: 0; }
.flash {
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 10px;
  font-size: 0.92rem;
  font-weight: 600;
}
.flash.success { background: var(--color-success-bg); color: var(--color-success-text); }
.flash.error { background: var(--color-error-bg); color: var(--color-error-text); }

/* -------------------- Catalog -------------------- */

.catalog-panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #fff6d9 0%, #ffce33 48%, #f2a900 100%);
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid rgba(169, 117, 10, 0.25);
  box-shadow: var(--shadow);
  padding: 30px clamp(16px, 4vw, 36px) 40px;
  margin: 28px 0 40px;
}
.catalog-panel::after {
  content: "";
  position: absolute;
  right: -60px; top: -60px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.55), transparent 70%);
  pointer-events: none;
}
.catalog-panel > * { position: relative; z-index: 1; }
.catalog-panel .field-hint { color: var(--color-ink); opacity: 0.7; font-weight: 600; }

.section-title { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 20px; flex-wrap: wrap; gap: 10px;}
.section-title h2 { margin: 0; font-size: 1.5rem; }

.category-pills { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.pill {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(23, 23, 23, 0.12);
  background: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-ink-soft);
}
.pill.active, .pill:hover { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 22px;
  margin-bottom: 8px;
}

.product-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}
.product-card .thumb { background: #f4f1ec; }
.product-card .thumb img { width: 100%; height: 170px; object-fit: contain; padding: 10px; }
.product-card .body { padding: 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-card .category-tag { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-accent-dark); font-weight: 700; }
.product-card h3 { margin: 0; font-size: 1.02rem; }
.product-card .price { font-weight: 800; color: var(--color-ink); font-size: 1.1rem; margin-top: auto; }
.product-card .btn { margin-top: 10px; }

/* -------------------- Product detail -------------------- */

.product-detail { display: flex; gap: 40px; flex-wrap: wrap; margin-bottom: 50px; }
.product-detail .image-col { flex: 1 1 360px; background: #f4f1ec; border-radius: var(--radius); padding: 20px; }
.product-detail .info-col { flex: 1 1 360px; }
.product-detail .category-tag { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-accent-dark); font-weight: 700; }
.product-detail h1 { margin: 6px 0 10px; font-size: 1.9rem; }
.product-detail .price { font-size: 1.6rem; font-weight: 800; color: var(--color-ink); margin-bottom: 16px; }
.product-detail .desc { color: var(--color-ink-soft); margin-bottom: 24px; }
.qty-input { width: 90px !important; display: inline-block; }
.related-title { margin-top: 10px; }

.purchase-options { display: flex; flex-direction: column; gap: 16px; margin-top: 8px; }
.purchase-option { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 18px 20px; background: #fff; }
.purchase-option h3 { color: var(--color-primary-dark); }
.purchase-option .field-hint { margin-top: 10px; margin-bottom: 0; }
.purchase-option form { margin-bottom: 0; }

/* -------------------- Cart -------------------- */

.cart-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); margin-bottom: 26px; }
.cart-table th, .cart-table td { padding: 14px 16px; border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: middle; }
.cart-table th { background: #f6f3ee; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-ink-soft); }
.cart-line-product { display: flex; align-items: center; gap: 14px; }
.cart-line-product img { width: 56px; height: 56px; object-fit: contain; background: #f4f1ec; border-radius: 8px; padding: 6px; }
.cart-qty-form { display: inline-flex; align-items: center; gap: 6px; }
.cart-qty-form input { width: 64px !important; padding: 6px 8px; }

.summary-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  max-width: 380px;
  margin-left: auto;
}
.summary-row { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 0.95rem; color: var(--color-ink-soft); }
.summary-row.total { font-size: 1.2rem; font-weight: 800; color: var(--color-ink); border-top: 1px solid var(--color-border); padding-top: 12px; margin-top: 12px; }
.free-shipping-note { font-size: 0.82rem; color: var(--color-primary-dark); background: var(--color-success-bg); padding: 8px 10px; border-radius: 8px; margin-bottom: 14px; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--color-ink-soft); }
.empty-state .btn { margin-top: 16px; }

/* -------------------- Checkout -------------------- */

.checkout-layout { display: flex; gap: 40px; flex-wrap: wrap; align-items: flex-start; margin-bottom: 60px; }
.checkout-form-col { flex: 2 1 460px; }
.checkout-summary-col { flex: 1 1 300px; }
.checkout-section { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px; margin-bottom: 22px; border: 1px solid var(--color-border); }
.checkout-section h2 { font-size: 1.1rem; margin: 0 0 18px; }
.summary-line-item { display: flex; justify-content: space-between; font-size: 0.88rem; margin-bottom: 8px; color: var(--color-ink-soft); }

.bank-details { background: var(--color-warning-bg); border-radius: 10px; padding: 16px; margin-top: 12px; }
.bank-details dt { font-weight: 700; font-size: 0.78rem; text-transform: uppercase; color: var(--color-warning-text); margin-top: 10px; }
.bank-details dd { margin: 2px 0 0; font-size: 0.95rem; }

/* -------------------- Order status -------------------- */

.status-badge { display: inline-flex; padding: 6px 14px; border-radius: 999px; font-size: 0.8rem; font-weight: 700; }
.status-pending_payment, .status-pending_transfer_confirmation, .status-pending_quote { background: var(--color-warning-bg); color: var(--color-warning-text); }
.status-paid, .status-confirmed { background: var(--color-success-bg); color: var(--color-success-text); }
.status-rejected, .status-cancelled { background: var(--color-error-bg); color: var(--color-error-text); }

.order-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.order-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px; margin-bottom: 22px; border: 1px solid var(--color-border); }
.order-items-table { width: 100%; border-collapse: collapse; }
.order-items-table td, .order-items-table th { padding: 10px 0; border-bottom: 1px solid var(--color-border); text-align: left; }

/* -------------------- Admin -------------------- */

.admin-table { width: 100%; border-collapse: collapse; background: #fff; box-shadow: var(--shadow); border-radius: var(--radius); overflow: hidden; }
.admin-table th, .admin-table td { padding: 12px 14px; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; text-align: left; }
.admin-table th { background: #f6f3ee; text-transform: uppercase; font-size: 0.72rem; letter-spacing: 0.04em; color: var(--color-ink-soft); }
.admin-filters { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.login-box { max-width: 380px; margin: 80px auto; background: #fff; padding: 30px; border-radius: var(--radius); box-shadow: var(--shadow); }
.file-chip { display: inline-flex; align-items: center; gap: 6px; background: #f4f1ec; padding: 8px 12px; border-radius: 8px; margin: 4px 6px 0 0; font-size: 0.85rem; }

/* -------------------- Footer -------------------- */

.site-footer {
  background: var(--color-surface);
  color: var(--color-ink-soft);
  padding: 40px 0;
  margin-top: 60px;
  font-size: 0.88rem;
  border-top: 3px solid var(--color-accent);
}
.site-footer a { color: var(--color-ink); font-weight: 600; }
.site-footer a:hover { color: var(--color-accent-dark); }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

@media (max-width: 640px) {
  .hero h1 { font-size: 1.6rem; }
  .summary-card { max-width: none; }
  .order-header { flex-direction: column; align-items: flex-start; }
}