/* ============================
   VARIABLES
   ============================ */
:root {
  --bg: #080808;
  --bg2: #111111;
  --bg3: #1a1a1a;
  --border: #222222;
  --accent: #d4ff00;
  --accent2: #ff3c3c;
  --text: #f0f0f0;
  --text-muted: #888888;
  --card-bg: #131313;
  --header-h: 64px;
  --radius: 8px;
  --radius-lg: 16px;
  --transition: 0.2s ease;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
}

/* ============================
   RESET & BASE
   ============================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, select { font-family: inherit; cursor: pointer; }
ul { list-style: none; }

/* ============================
   UTILITY
   ============================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: #000;
}
.btn-primary:hover { background: #c9f000; box-shadow: 0 0 20px rgba(212,255,0,0.4); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: none;
  padding: 8px;
}
.btn-ghost:hover { color: var(--accent2); }

/* ============================
   HEADER
   ============================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8,8,8,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}
.logo span { color: var(--accent); }

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav a {
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav a:hover, .nav a.active { color: var(--text); }
.nav a.active { color: var(--accent); }

.cart-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 1.2rem;
  transition: transform var(--transition);
}
.cart-link:hover { transform: scale(1.1); }
.cart-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  background: var(--accent);
  color: #000;
  font-size: 0.65rem;
  font-weight: 900;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  display: none;
}
.cart-badge.visible { display: flex; }

/* Hamburger (mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ============================
   HERO
   ============================ */
.hero {
  min-height: calc(100vh - var(--header-h));
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  overflow: hidden;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(212,255,0,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  padding: 80px 0 80px 0;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(212,255,0,0.08);
  border: 1px solid rgba(212,255,0,0.2);
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 32px;
}
.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  line-height: 0.9;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-title .highlight { color: var(--accent); }
.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 420px;
  margin-bottom: 40px;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  position: relative;
}
.hero-visual-inner {
  font-size: clamp(8rem, 18vw, 14rem);
  animation: float 4s ease-in-out infinite;
  filter: drop-shadow(0 0 60px rgba(212,255,0,0.2));
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50% { transform: translateY(-20px) rotate(3deg); }
}

/* ============================
   SECTION HEADERS
   ============================ */
.section {
  padding: 80px 0;
}
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 16px;
}
.section-title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 400;
  letter-spacing: 0;
}
.see-all {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  transition: opacity var(--transition);
}
.see-all:hover { opacity: 0.7; }

/* ============================
   PRODUCT GRID
   ============================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

/* ============================
   PRODUCT CARD
   ============================ */
.product-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212,255,0,0.3);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.card-image {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
}
.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 50px;
  backdrop-filter: blur(8px);
}
.card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}
.card-name {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.card-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
  flex: 1;
}
.card-footer {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.card-price {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--accent);
}
.card-controls {
  display: flex;
  gap: 8px;
}
.size-select {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: var(--radius);
  font-size: 0.82rem;
  font-weight: 600;
  outline: none;
  transition: border-color var(--transition);
}
.size-select:focus { border-color: var(--accent); }
.size-select option { background: var(--bg3); }

.add-btn {
  flex: 2;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.add-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
}
.add-btn.added {
  background: #1a3300;
  border-color: #3a6600;
  color: #a8ff00;
}

/* ============================
   BANNER STRIP
   ============================ */
.banner-strip {
  background: var(--accent);
  color: #000;
  padding: 20px 0;
  overflow: hidden;
  position: relative;
}
.banner-scroll {
  display: flex;
  gap: 60px;
  animation: scroll-banner 20s linear infinite;
  white-space: nowrap;
  width: max-content;
}
.banner-item {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 20px;
}
.banner-item::after {
  content: '⚡';
}
@keyframes scroll-banner {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============================
   CATEGORIES BAR
   ============================ */
.categories {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 0;
}
.cat-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all var(--transition);
}
.cat-btn:hover { border-color: rgba(212,255,0,0.3); color: var(--text); }
.cat-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
}

/* ============================
   CATALOG PAGE
   ============================ */
.catalog-header {
  padding: 60px 0 0;
}
.catalog-header h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}
.catalog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  flex-wrap: wrap;
  gap: 12px;
}
.product-count {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.catalog-filters {
  padding: 24px 0 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}
.catalog-grid-section {
  padding-bottom: 80px;
}

/* ============================
   CART PAGE
   ============================ */
.cart-page {
  padding: 60px 0 80px;
}
.cart-page h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
}
.cart-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  align-items: start;
}
.cart-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.cart-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 16px;
  align-items: center;
}
.cart-item-img {
  width: 80px;
  height: 80px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}
.cart-item-info { display: flex; flex-direction: column; gap: 4px; }
.cart-item-name { font-weight: 700; font-size: 0.95rem; }
.cart-item-meta { font-size: 0.82rem; color: var(--text-muted); }
.cart-item-price { font-weight: 900; color: var(--accent); font-size: 1rem; }
.cart-item-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}
.qty-control {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 8px;
}
.qty-btn {
  background: none;
  border: none;
  color: var(--text);
  font-size: 1rem;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background var(--transition);
}
.qty-btn:hover { background: var(--border); }
.qty-value {
  min-width: 24px;
  text-align: center;
  font-weight: 700;
  font-size: 0.9rem;
}
.remove-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--transition);
}
.remove-btn:hover { color: var(--accent2); }

/* Order summary */
.order-summary {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}
.summary-title {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  padding: 8px 0;
}
.summary-row.total {
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--text);
  border-top: 1px solid var(--border);
  margin-top: 8px;
  padding-top: 16px;
}
.free-shipping { color: #4ade80; font-weight: 700; font-size: 0.8rem; letter-spacing: 0.06em; text-transform: uppercase; }
.checkout-btn {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 0.95rem;
  margin-top: 20px;
}
.continue-link {
  display: block;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 16px;
  transition: color var(--transition);
}
.continue-link:hover { color: var(--accent); }

/* Empty cart */
.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 80px 20px;
  text-align: center;
}
.cart-empty-icon { font-size: 5rem; }
.cart-empty h2 {
  font-size: 1.5rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}
.cart-empty p { color: var(--text-muted); max-width: 340px; }

/* ============================
   FEATURES SECTION
   ============================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
}
.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-title { font-weight: 700; font-size: 0.95rem; margin-bottom: 4px; }
.feature-text { font-size: 0.82rem; color: var(--text-muted); }

/* ============================
   FOOTER
   ============================ */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .logo {
  font-size: 1.2rem;
  margin-bottom: 12px;
  display: inline-flex;
}
.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 280px;
  line-height: 1.7;
}
.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-bottom span { color: var(--accent); }

/* ============================
   TOAST NOTIFICATION
   ============================ */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  animation: slide-in 0.25s ease;
  display: flex;
  align-items: center;
  gap: 10px;
}
.toast.success { border-color: rgba(212,255,0,0.4); }
@keyframes slide-in {
  from { transform: translateX(60px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
@keyframes slide-out {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(60px); opacity: 0; }
}
.toast.hiding { animation: slide-out 0.25s ease forwards; }

/* ============================
   PROMO BANNER
   ============================ */
.promo-bar {
  background: var(--accent);
  color: #000;
  text-align: center;
  padding: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.promo-bar a { text-decoration: underline; }

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-content { padding: 60px 0; }
  .cart-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 20px;
    gap: 4px;
  }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-header { flex-direction: column; gap: 4px; }
  .cart-item { grid-template-columns: 64px 1fr; }
  .cart-item-actions { grid-column: 1 / -1; flex-direction: row; justify-content: space-between; }
}