/*
  GMF Clothing 904 — global styles
  The design system uses CSS variables derived from brand.config.json.
  Colors, typography, spacing, and component styles are centralized here.
*/

/* Import Google Fonts — note: network fetch occurs when the site is live */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@700&family=Inter:wght@400;500&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Color palette */
  --color-bg: #0A0A0A;
  --color-surface: #151515;
  --color-surface-raised: #1D1D1D;
  --color-text-primary: #F5F5F2;
  --color-text-secondary: #A7A7A7;
  --color-accent-gold: #D6B25E;
  --color-accent-blue: #5A9BFF;
  --color-border: #2B2B2B;
  --color-error: #D96B6B;
  --color-success: #79C98C;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-utility: 'JetBrains Mono', monospace;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  /* Border radius */
  --radius-card: 8px;
  --radius-pill: 999px;

  /* Breakpoints */
  --bp-sm: 480px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;
}

/* Global reset */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.5;
  scroll-behavior: smooth;
}

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

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  margin: 0 0 var(--space-4) 0;
  color: var(--color-text-primary);
}

p {
  margin: 0 0 var(--space-4) 0;
  color: var(--color-text-secondary);
  max-width: 65ch;
}

/* Layout components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

header {
  width: 100%;
  padding: var(--space-3) 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-text-primary);
}

.nav-links {
  display: flex;
  gap: var(--space-4);
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.nav-links a:hover {
  color: var(--color-text-primary);
}

/* Announcement bar */
.announcement-bar {
  background-color: var(--color-accent-gold);
  color: var(--color-bg);
  text-align: center;
  padding: var(--space-2);
  font-size: 0.85rem;
}

/* Hero section */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-7) var(--space-4);
  text-align: center;
  background-color: var(--color-surface);
  background-image: linear-gradient(135deg, rgba(0,0,0,0.8), rgba(20,20,20,0.6));
  position: relative;
  overflow: hidden;
}

.hero img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  margin-top: var(--space-4);
}

.hero-eyebrow {
  font-family: var(--font-utility);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.75rem;
  color: var(--color-accent-gold);
}

.hero-headline {
  font-size: 3rem;
  line-height: 1.1;
  margin: var(--space-4) 0;
  color: var(--color-text-primary);
}

.hero-body {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-card);
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  text-align: center;
  transition: background-color 0.2s ease;
  border: none;
}

.btn-primary {
  background-color: var(--color-accent-gold);
  color: var(--color-bg);
}

.btn-primary:hover {
  background-color: #b3944a;
}

.btn-secondary {
  background-color: var(--color-surface-raised);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface);
}

/* Collection strip */
.collection-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin: var(--space-7) 0;
}

.collection-item {
  flex: 1 1 calc(50% - var(--space-4));
  min-width: 140px;
  background-color: var(--color-surface);
  padding: var(--space-4);
  border-radius: var(--radius-card);
  text-align: center;
  border: 1px solid var(--color-border);
}

.collection-item h3 {
  margin-bottom: var(--space-2);
  font-size: 1.1rem;
}

.collection-item a {
  color: var(--color-accent-blue);
}

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-5);
  margin: var(--space-7) 0;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: var(--space-5) 0 var(--space-4);
}

.filter-btn {
  appearance: none;
  border: 1px solid #2a2a2a;
  background: transparent;
  color: inherit;
  font: inherit;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.filter-btn:hover { border-color: #555; }

.filter-btn.active {
  background: #111;
  color: #fff;
  border-color: #111;
}

.product-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease;
}

.product-card:hover {
  transform: translateY(-4px);
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background-color: var(--color-surface-raised);
}

.product-card .info {
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.product-card .title {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-text-primary);
}

.product-card .price {
  font-family: var(--font-utility);
  color: var(--color-accent-gold);
  font-size: 0.9rem;
}

.badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-family: var(--font-utility);
  color: var(--color-bg);
  background-color: var(--color-accent-gold);
  margin-right: var(--space-2);
}

.sold-out {
  background-color: var(--color-error);
  color: var(--color-bg);
}

/* Product page */
.product-detail {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin: var(--space-7) 0;
}

@media (min-width: var(--bp-md)) {
  .product-detail {
    flex-direction: row;
  }
}

.product-images {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.product-images img {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  border-radius: var(--radius-card);
  background-color: var(--color-surface-raised);
}

.product-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.variant-selectors {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.variant-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.variant-option {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  cursor: pointer;
  font-family: var(--font-utility);
  font-size: 0.8rem;
  color: var(--color-text-primary);
}

.variant-option.selected {
  background-color: var(--color-accent-gold);
  color: var(--color-bg);
}

/* Cart and checkout */
.cart-items, .checkout-summary {
  width: 100%;
  margin: var(--space-7) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background-color: var(--color-surface);
  padding: var(--space-5);
}

.cart-item {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.cart-item img {
  width: 80px;
  aspect-ratio: 4/5;
  object-fit: cover;
  border-radius: var(--radius-card);
}

.cart-item-info {
  flex: 1;
}

.cart-item-info h4 {
  margin: 0;
}

.cart-summary {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-utility);
  margin-top: var(--space-4);
}

.disabled-button {
  background-color: var(--color-border);
  color: var(--color-text-secondary);
  cursor: not-allowed;
}

/* Footer */
footer {
  margin-top: var(--space-9);
  padding: var(--space-6) var(--space-4);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

footer .footer-columns {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

footer .footer-column {
  flex: 1 1 200px;
}

footer .footer-column h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

footer .footer-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

footer .footer-column li {
  margin-bottom: var(--space-2);
}

footer .footer-bottom {
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
}

/* Responsive helpers */
@media (max-width: 600px) {
  .nav-links {
    display: none;
  }
}