:root {
  --color-bg: #0a0a0b;
  --color-surface: #141416;
  --color-border: #27272a;
  --color-text: #fafafa;
  --color-text-muted: #a1a1aa;
  --color-accent: #eab308;
  --color-accent-hover: #facc15;
  --font-display: "Bebas Neue", sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.header {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.logo {
  display: inline-block;
  text-decoration: none;
}

.logo-img {
  display: block;
  height: 2.25rem;
  width: auto;
  object-fit: contain;
}

/* Hero */
.hero {
  padding: 4rem 0 5rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

@media (min-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.hero-content {
  text-align: center;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 4rem);
  letter-spacing: 0.02em;
  margin: 0 0 1rem;
  line-height: 1.1;
}

.hero-brand {
  font-size: 0.875rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 0.5rem;
  font-weight: 600;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 32ch;
  margin: 0 auto 1rem;
}

.hero-price {
  margin: 0 0 1.5rem;
}

.price-amount {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: 0.02em;
  color: var(--color-accent);
}

.hero-note {
  margin: 1rem 0 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 6px;
  transition: background 0.2s, transform 0.15s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #0a0a0b;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Product gallery */
.product-gallery {
  max-width: 420px;
  margin: 0 auto;
}

.gallery-main {
  position: relative;
  aspect-ratio: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.gallery-main-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  cursor: pointer;
}

.gallery-zoom {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  border-radius: 6px;
  background: rgba(10, 10, 11, 0.7);
  cursor: pointer;
  z-index: 2;
}

.gallery-zoom::after {
  content: "";
  position: absolute;
  inset: 0.5rem;
  border: 2px solid var(--color-text);
  border-radius: 2px;
  box-sizing: border-box;
}

.gallery-zoom:hover {
  background: rgba(10, 10, 11, 0.9);
}

.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  border-radius: 6px;
  background: rgba(10, 10, 11, 0.7);
  color: var(--color-text);
  font-size: 1.25rem;
  cursor: pointer;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-nav:hover {
  background: rgba(10, 10, 11, 0.9);
}

.gallery-prev {
  left: 0.75rem;
}

.gallery-next {
  right: 0.75rem;
}

.gallery-nav::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
}

.gallery-next::before {
  transform: rotate(135deg);
}

.gallery-thumbs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.gallery-thumb {
  width: 4rem;
  height: 4rem;
  border-radius: 6px;
  border: 2px solid var(--color-border);
  overflow: hidden;
  cursor: pointer;
  flex-shrink: 0;
  background: var(--color-surface);
}

.gallery-thumb:hover,
.gallery-thumb.active {
  border-color: var(--color-accent);
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img {
  max-width: 100%;
  max-height: 85vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.75rem;
  height: 2.75rem;
  border: none;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 1001;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-close::before,
.lightbox-close::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.25rem;
  height: 2px;
  background: currentColor;
}

.lightbox-close::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.lightbox-close::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 3rem;
  height: 3rem;
  border: none;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
  cursor: pointer;
  z-index: 1001;
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev {
  left: 1rem;
}

.lightbox-next {
  right: 1rem;
}

.lightbox-nav::before {
  content: "";
  width: 0.6rem;
  height: 0.6rem;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
}

.lightbox-next::before {
  transform: rotate(135deg);
}

/* Product details */
.product-details {
  padding: 2.5rem 0 3rem;
  background: var(--color-surface);
}

.details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  max-width: 32rem;
  margin: 0 auto;
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.detail-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.detail-value {
  font-weight: 600;
}

.detail-value.availability {
  color: #22c55e;
}

/* Shipping */
.shipping-section {
  padding: 2.5rem 0 3rem;
}

.shipping-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: 24rem;
  margin: 0 auto;
}

.shipping-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.shipping-list li:last-child {
  border-bottom: none;
}

/* Benefits */
.benefits {
  padding: 3rem 0 4rem;
  background: var(--color-surface);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  letter-spacing: 0.02em;
  text-align: center;
  margin: 0 0 2rem;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.benefit-card {
  padding: 1.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.benefit-icon {
  display: block;
  color: var(--color-accent);
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.benefit-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.benefit-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* CTA section */
.cta-section {
  padding: 4rem 0 5rem;
  text-align: center;
}

.cta-heading {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: 0.02em;
  margin: 0 0 1.5rem;
  max-width: 24ch;
  margin-left: auto;
  margin-right: auto;
}

.cta-note {
  margin: 1rem 0 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Footer */
.footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}