/* ============================================
   818 LABS - Custom Storefront
   Dark theme, research peptide supplier
   ============================================ */

/* === RESET & BASE === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --bg-card-hover: #222222;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #777777;
  --accent: #d4a853;
  --accent-hover: #e6be6a;
  --accent-dark: #b8923e;
  --border: #2a2a2a;
  --border-light: #333333;
  --success: #4caf50;
  --danger: #e74c3c;
  --sale: #e74c3c;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --transition: all 0.3s ease;
  --max-width: 1280px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* === TOP BAR === */
.top-bar {
  background: var(--accent);
  color: var(--bg-primary);
  text-align: center;
  padding: 10px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.top-bar span {
  display: inline-block;
}

/* === HEADER / NAV === */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo img {
  height: 50px;
  width: auto;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--accent);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.cart-icon {
  position: relative;
  cursor: pointer;
  font-size: 1.3rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.cart-icon:hover {
  color: var(--accent);
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--accent);
  color: var(--bg-primary);
  font-size: 0.7rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* === HERO === */
.hero {
  background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1520 50%, var(--bg-primary) 100%);
  padding: 100px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(212,168,83,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  background: rgba(212,168,83,0.15);
  color: var(--accent);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
  border: 1px solid rgba(212,168,83,0.3);
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-transform: uppercase;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(212,168,83,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 24px;
}

/* === TRUST BAR === */
.trust-bar {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 30px 20px;
}

.trust-bar .container {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
}

.trust-item .icon {
  font-size: 1.5rem;
  color: var(--accent);
}

.trust-item span {
  font-size: 0.9rem;
  font-weight: 500;
}

/* === SECTION HEADERS === */
.section {
  padding: 80px 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-label {
  display: inline-block;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* === PRODUCT GRID === */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.product-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.product-card .badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--sale);
  color: white;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  z-index: 2;
}

.product-card .badge.best-seller {
  background: var(--accent);
  color: var(--bg-primary);
}

.product-image {
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 250px;
  position: relative;
}

.product-image img {
  max-height: 200px;
  object-fit: contain;
  transition: var(--transition);
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-image .vial-placeholder {
  width: 80px;
  height: 160px;
  background: linear-gradient(180deg, #e8e8e8 0%, #d0d0d0 20%, rgba(100,140,200,0.3) 20%, rgba(80,120,180,0.5) 100%);
  border-radius: 8px 8px 4px 4px;
  position: relative;
  box-shadow: inset 0 0 10px rgba(255,255,255,0.1), 0 4px 15px rgba(0,0,0,0.3);
}

.vial-placeholder::before {
  content: '';
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 18px;
  background: linear-gradient(180deg, #c0c0c0, #a0a0a0);
  border-radius: 4px 4px 0 0;
}

.vial-placeholder .vial-label {
  position: absolute;
  top: 35%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  width: 90%;
}

.vial-label .brand {
  font-size: 0.45rem;
  font-weight: 800;
  color: var(--bg-primary);
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.9;
}

.vial-label .product-name-label {
  font-size: 0.5rem;
  font-weight: 700;
  color: var(--bg-primary);
  margin-top: 2px;
  opacity: 0.8;
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.3;
}

.product-info .product-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.product-pricing {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.product-pricing .price {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
}

.product-pricing .original-price {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.product-actions {
  display: flex;
  gap: 8px;
}

.btn-add-cart {
  flex: 1;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-add-cart:hover {
  background: var(--accent-hover);
}

.btn-view {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.85rem;
}

.btn-view:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* === CATEGORY FILTERS === */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}

/* === ABOUT SECTION === */
.about-section {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 30px;
}

.stat-item {
  text-align: center;
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.stat-item .number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
}

.stat-item .label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* === FAQ === */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
  font-family: var(--font);
}

.faq-question:hover {
  color: var(--accent);
}

.faq-question .icon {
  font-size: 1.2rem;
  transition: var(--transition);
  color: var(--accent);
}

.faq-item.active .faq-question .icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

/* === PAYMENT METHODS === */
.payment-section {
  background: var(--bg-secondary);
}

.payment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.payment-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  text-align: center;
  transition: var(--transition);
}

.payment-card:hover {
  border-color: var(--accent);
}

.payment-card .icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.payment-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.payment-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* === CTA BANNER === */
.cta-banner {
  background: linear-gradient(135deg, rgba(212,168,83,0.1), rgba(212,168,83,0.05));
  border: 1px solid rgba(212,168,83,0.2);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  margin: 0 20px;
}

.cta-banner h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.cta-banner p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* === FOOTER === */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 60px 20px 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 16px;
}

.footer h4 {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-contact p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.footer-contact a {
  color: var(--text-muted);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* === FDA DISCLAIMER === */
.fda-disclaimer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 30px 20px;
}

.fda-disclaimer h4 {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.fda-disclaimer p {
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.7;
  max-width: 1000px;
  margin: 0 auto 8px;
}

.fda-disclaimer .caps {
  text-transform: uppercase;
  font-weight: 600;
}

/* === LEGAL PAGES === */
.legal-page {
  padding: 60px 20px;
  max-width: 800px;
  margin: 0 auto;
}

.legal-page h1 {
  font-size: 2rem;
  margin-bottom: 30px;
  color: var(--accent);
}

.legal-page h2 {
  font-size: 1.3rem;
  margin: 30px 0 12px;
  color: var(--text-primary);
}

.legal-page h3 {
  font-size: 1.1rem;
  margin: 24px 0 10px;
  color: var(--text-primary);
}

.legal-page p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.8;
}

.legal-page ul, .legal-page ol {
  color: var(--text-secondary);
  margin: 10px 0 20px 20px;
  line-height: 1.8;
}

.legal-page li {
  margin-bottom: 6px;
}

/* === PRODUCT DETAIL PAGE === */
.product-detail {
  padding: 40px 20px;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.product-detail-image {
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  border-radius: var(--radius-lg);
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.product-detail-info h1 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.product-detail-info .subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.product-detail-info .detail-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 24px;
}

.product-detail-info .detail-price .original {
  font-size: 1.2rem;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-left: 12px;
  font-weight: 400;
}

.product-specs {
  margin: 24px 0;
}

.product-specs dt {
  font-weight: 600;
  color: var(--text-primary);
  display: inline;
}

.product-specs dd {
  color: var(--text-secondary);
  display: inline;
  margin-left: 4px;
  margin-bottom: 8px;
}

.product-specs .spec-row {
  margin-bottom: 10px;
}

.variant-select {
  margin-bottom: 24px;
}

.variant-select label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.variant-select select {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  width: 100%;
  max-width: 300px;
  cursor: pointer;
  font-family: var(--font);
}

.variant-select select:focus {
  outline: none;
  border-color: var(--accent);
}

.qty-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.qty-selector button {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.qty-selector button:hover {
  border-color: var(--accent);
}

.qty-selector input {
  width: 60px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  padding: 8px;
  font-size: 1rem;
  font-family: var(--font);
}

.detail-notice {
  background: rgba(212,168,83,0.1);
  border: 1px solid rgba(212,168,83,0.2);
  border-radius: var(--radius);
  padding: 16px;
  margin-top: 24px;
}

.detail-notice p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.detail-notice strong {
  color: var(--accent);
}

/* === CART SIDEBAR === */
.cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.cart-overlay.open {
  opacity: 1;
  visibility: visible;
}

.cart-sidebar {
  position: fixed;
  top: 0;
  right: -420px;
  width: 400px;
  max-width: 90vw;
  height: 100vh;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  z-index: 2001;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
}

.cart-sidebar.open {
  right: 0;
}

.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.cart-header h3 {
  font-size: 1.2rem;
}

.cart-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}

.cart-close:hover {
  color: var(--text-primary);
}

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

.cart-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.cart-item-image {
  width: 60px;
  height: 60px;
  background: var(--bg-card);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.cart-item-details h4 {
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.cart-item-details .cart-item-price {
  color: var(--accent);
  font-weight: 600;
}

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.cart-item-qty button {
  width: 28px;
  height: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.9rem;
  font-family: var(--font);
}

.cart-item-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  margin-top: 4px;
  font-family: var(--font);
}

.cart-item-remove:hover {
  color: var(--danger);
}

.cart-empty {
  text-align: center;
  padding: 40px 0;
  color: var(--text-muted);
}

.cart-footer {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
}

.cart-total {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: 1.1rem;
  font-weight: 700;
}

.cart-total .amount {
  color: var(--accent);
}

.btn-checkout {
  width: 100%;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  padding: 14px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: var(--font);
}

.btn-checkout:hover {
  background: var(--accent-hover);
}

/* === CHECKOUT PAGE === */
.checkout-section {
  padding: 40px 20px;
}

.checkout-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.checkout-form h2 {
  font-size: 1.4rem;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.payment-method-selector {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.payment-method-option {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.payment-method-option:hover,
.payment-method-option.selected {
  border-color: var(--accent);
}

.payment-method-option .pm-icon {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.payment-method-option .pm-label {
  font-size: 0.85rem;
  font-weight: 600;
}

.payment-instructions {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-top: 16px;
}

.payment-instructions h4 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--accent);
}

.payment-instructions p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.order-summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  position: sticky;
  top: 100px;
}

.order-summary-card h3 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.order-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(42,42,42,0.5);
}

.order-line .item-name {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.order-line .item-qty {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.order-line .item-price {
  font-weight: 600;
  color: var(--text-primary);
}

.order-totals {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.order-totals .total-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.order-totals .total-row.grand-total {
  font-size: 1.2rem;
  font-weight: 800;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.order-totals .grand-total .amount {
  color: var(--accent);
}

/* === TOAST NOTIFICATION === */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 24px;
  color: var(--text-primary);
  font-size: 0.9rem;
  z-index: 3000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast .toast-icon {
  color: var(--accent);
  margin-right: 8px;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .product-detail-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .checkout-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    gap: 16px;
  }

  .nav.open {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero {
    padding: 60px 20px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .section {
    padding: 50px 20px;
  }

  .section-header h2 {
    font-size: 1.6rem;
  }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
  }

  .trust-bar .container {
    gap: 30px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .about-stats {
    grid-template-columns: 1fr 1fr;
  }

  .payment-method-selector {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .trust-bar .container {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }
}