/* ── Reset & Base ────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #0f1923;
  --accent: #e8491d;
  --accent-hover: #d63a0f;
  --light: #f4f4f4;
  --gray: #6b7280;
  --gray-light: #e5e7eb;
  --white: #ffffff;
  --shadow: 0 2px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
  --radius: 12px;
  --max-w: 1200px;
  --transition: .25s ease;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--primary);
  line-height: 1.6;
  background: var(--white);
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ── Header ──────────────────────────────────────────────────────── */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-light);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo svg { width: 32px; height: 32px; }
.logo span.accent { color: var(--accent); }

.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
  font-size: .925rem;
  font-weight: 500;
  color: var(--gray);
  transition: color var(--transition);
  position: relative;
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.header-actions { display: flex; gap: 16px; align-items: center; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .9rem;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--gray-light);
}
.btn-outline:hover { border-color: var(--primary); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: 10px; }
.btn-sm { padding: 8px 16px; font-size: .85rem; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Hero ────────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, #0f1923 0%, #1a2d3d 50%, #243447 100%);
  color: var(--white);
  padding: 100px 0 120px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232,73,29,.15) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(10px);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: .8rem;
  font-weight: 500;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,.1);
}
.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,.7);
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-wheel-icon {
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(232,73,29,.2), rgba(232,73,29,.05));
  border: 2px solid rgba(232,73,29,.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  animation: float 4s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.hero-stat h3 {
  font-size: 1.75rem;
  font-weight: 700;
}
.hero-stat p {
  font-size: .85rem;
  color: rgba(255,255,255,.5);
  margin-bottom: 0;
}

/* ── Trust Bar ───────────────────────────────────────────────────── */
.trust-bar {
  background: var(--light);
  padding: 28px 0;
  border-bottom: 1px solid var(--gray-light);
}
.trust-items {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--gray);
}
.trust-item svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }

/* ── Section Shared ──────────────────────────────────────────────── */
.section { padding: 80px 0; }
.section-dark { background: var(--light); }
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -.5px;
  margin-bottom: 12px;
}
.section-header p {
  color: var(--gray);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ── Category Tabs ───────────────────────────────────────────────── */
.category-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.cat-tab {
  padding: 8px 20px;
  border-radius: 20px;
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  background: var(--white);
  border: 1.5px solid var(--gray-light);
  color: var(--gray);
  transition: all var(--transition);
}
.cat-tab:hover { border-color: var(--primary); color: var(--primary); }
.cat-tab.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* ── Product Grid ────────────────────────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-light);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-img {
  aspect-ratio: 1;
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
}
.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: .75rem;
  font-weight: 600;
}
.badge-sale { background: var(--accent); color: var(--white); }
.badge-new { background: #10b981; color: var(--white); }
.badge-popular { background: #6366f1; color: var(--white); }
.product-body { padding: 20px; }
.product-brand {
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 4px;
}
.product-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}
.product-specs {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.spec-tag {
  font-size: .75rem;
  padding: 3px 8px;
  background: var(--light);
  border-radius: 4px;
  color: var(--gray);
  font-weight: 500;
}
.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.product-price {
  font-size: 1.25rem;
  font-weight: 800;
}
.product-price .old-price {
  font-size: .85rem;
  color: var(--gray);
  text-decoration: line-through;
  font-weight: 400;
  margin-left: 6px;
}
.product-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .85rem;
  color: var(--gray);
}
.stars { color: #f59e0b; }

/* ── Features ────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(232,73,29,.1), rgba(232,73,29,.05));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
}
.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: .9rem;
  color: var(--gray);
}

/* ── Testimonials ────────────────────────────────────────────────── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  padding: 28px;
}
.testimonial-stars { color: #f59e0b; margin-bottom: 12px; font-size: 1rem; }
.testimonial-text {
  font-size: .95rem;
  color: var(--gray);
  margin-bottom: 16px;
  line-height: 1.7;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #f59e0b);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: .9rem;
}
.testimonial-info strong { display: block; font-size: .9rem; }
.testimonial-info span { font-size: .8rem; color: var(--gray); }

/* ── CTA Banner ──────────────────────────────────────────────────── */
.cta-banner {
  background: linear-gradient(135deg, #0f1923, #1a2d3d);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}
.cta-banner h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-banner p {
  color: rgba(255,255,255,.6);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Product Detail Modal ────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--white);
  border-radius: 16px;
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--light);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  z-index: 10;
  border: none;
}
.modal-close:hover { background: var(--gray-light); }
.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.modal-img {
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  min-height: 400px;
  border-radius: 16px 0 0 16px;
}
.modal-info {
  padding: 32px;
}
.modal-info .product-brand { margin-bottom: 8px; }
.modal-info h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.modal-info .product-price {
  font-size: 1.75rem;
  margin-bottom: 16px;
}
.modal-info .product-rating { margin-bottom: 20px; }
.modal-desc {
  font-size: .925rem;
  color: var(--gray);
  margin-bottom: 20px;
  line-height: 1.7;
}
.modal-specs {
  margin-bottom: 24px;
}
.modal-specs h4 {
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 12px;
  color: var(--gray);
}
.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-light);
  font-size: .9rem;
}
.spec-row span:first-child { color: var(--gray); }
.spec-row span:last-child { font-weight: 600; }
.modal-actions {
  display: flex;
  gap: 12px;
}
.modal-actions .btn { flex: 1; justify-content: center; }

/* ── Contact Page ────────────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, #0f1923, #1a2d3d);
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}
.page-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.page-hero p { color: rgba(255,255,255,.6); font-size: 1.05rem; }
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: .875rem;
  color: rgba(255,255,255,.4);
}
.breadcrumb a { color: rgba(255,255,255,.6); }
.breadcrumb a:hover { color: var(--white); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-card {
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(232,73,29,.1), rgba(232,73,29,.05));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.contact-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.contact-card p { font-size: .9rem; color: var(--gray); }

.contact-form-card {
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-form-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.contact-form-card > p {
  font-size: .9rem;
  color: var(--gray);
  margin-bottom: 24px;
}
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-light);
  border-radius: 8px;
  transition: border-color var(--transition);
  background: var(--white);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── About Section ───────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-text h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.about-text p {
  color: var(--gray);
  font-size: .95rem;
  margin-bottom: 16px;
  line-height: 1.7;
}
.about-visual {
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}
.stat-box {
  text-align: center;
  padding: 16px;
  background: var(--light);
  border-radius: 10px;
}
.stat-box h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
}
.stat-box p { font-size: .8rem; color: var(--gray); font-weight: 500; }

/* ── FAQ ─────────────────────────────────────────────────────────── */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-q {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: .95rem;
  background: var(--white);
  width: 100%;
  text-align: left;
}
.faq-q::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--gray);
  transition: transform var(--transition);
}
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.faq-a-inner {
  padding: 0 24px 18px;
  font-size: .9rem;
  color: var(--gray);
  line-height: 1.7;
}

/* ── Footer ──────────────────────────────────────────────────────── */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p {
  font-size: .9rem;
  margin-top: 12px;
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  color: var(--white);
  font-size: .9rem;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.footer-col a {
  display: block;
  font-size: .875rem;
  padding: 4px 0;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .8rem;
}
.payment-icons { display: flex; gap: 8px; }
.payment-icon {
  background: rgba(255,255,255,.1);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: .75rem;
  font-weight: 600;
}

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--gray-light);
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open { display: flex; }
  .hero { padding: 60px 0 80px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 2.5rem; }
  .hero-visual { order: -1; }
  .hero-wheel-icon { width: 240px; height: 240px; font-size: 5rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .product-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .modal-grid { grid-template-columns: 1fr; }
  .modal-img { min-height: 260px; border-radius: 16px 16px 0 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 2rem; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .section-header h2 { font-size: 1.75rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
}