/* ============================================================
   SUNSHINE WHEEL - Steel Wheels & Auto Parts Manufacturer
   Targeting South American Markets
   ============================================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
  --color-primary: #0d2137;
  --color-primary-light: #1a3a5c;
  --color-accent: #f47920;
  --color-accent-hover: #e06810;
  --color-gold: #d4a853;
  --color-green: #2ecc71;
  --color-green-dark: #27ae60;
  --color-white: #ffffff;
  --color-off-white: #f5f6fa;
  --color-gray-100: #f0f1f3;
  --color-gray-200: #e0e2e6;
  --color-gray-300: #c0c4cc;
  --color-gray-600: #6b7280;
  --color-gray-800: #2d3436;
  --color-text: #2c3e50;
  --color-text-light: #5a6c7d;
  --font-heading: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 14px;
  --max-width: 1240px;
  --transition: 0.25s ease;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 600px;
  line-height: 1.6;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244,121,32,0.35);
}

.btn-outline {
  border-color: var(--color-white);
  color: var(--color-white);
}
.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn-outline-dark {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-dark:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* --- Top Bar --- */
.topbar {
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.82rem;
  padding: 8px 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar-contact {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.topbar-contact span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.topbar-lang select {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  cursor: pointer;
}
.topbar-lang select option { color: var(--color-text); }

/* --- Header / Nav --- */
.header {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  padding-bottom: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
}
.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-gold));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  font-weight: 700;
  flex-shrink: 0;
}
.logo span small {
  display: block;
  font-size: 0.6rem;
  font-weight: 500;
  color: var(--color-text-light);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.nav { display: flex; gap: 4px; align-items: center; }
.nav a {
  padding: 10px 18px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.92rem;
  transition: all var(--transition);
  color: var(--color-text);
}
.nav a:hover { background: var(--color-gray-100); color: var(--color-accent); }
.nav a.nav-cta {
  background: var(--color-accent);
  color: #fff;
  margin-left: 8px;
}
.nav a.nav-cta:hover { background: var(--color-accent-hover); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  width: 26px;
  height: 2.5px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0f2847 40%, #1a3a5c 100%);
  color: var(--color-white);
  padding: 90px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  top: -60%;
  right: -15%;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244,121,32,0.15), transparent 70%);
  pointer-events: none;
}
.hero::before {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,168,83,0.10), transparent 70%);
  pointer-events: none;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-content h1 {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero-content h1 em {
  font-style: normal;
  color: var(--color-accent);
}
.hero-content p {
  font-size: 1.15rem;
  opacity: 0.85;
  margin-bottom: 32px;
  line-height: 1.7;
  max-width: 480px;
}
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat h3 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-accent);
}
.hero-stat p {
  font-size: 0.82rem;
  opacity: 0.7;
  margin: 2px 0 0 0;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-wheel {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: linear-gradient(145deg, #2a4a6c, #0d2137);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), inset 0 0 80px rgba(244,121,32,0.08);
  border: 6px solid rgba(255,255,255,0.08);
}
.hero-wheel-inner {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #e06810);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}
.hero-wheel-ring {
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,0.12);
}

/* --- Products Section --- */
.products {
  background: var(--color-off-white);
}

.products-header {
  text-align: center;
  margin-bottom: 50px;
}
.products-header .section-subtitle { margin: 0 auto; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.product-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-gray-200);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.product-img {
  height: 220px;
  background: linear-gradient(135deg, #1a3a5c, #0d2137);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-img::after {
  content: '';
  position: absolute;
  bottom: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(244,121,32,0.12);
}
.product-img-icon {
  font-size: 5rem;
  position: relative;
  z-index: 1;
}
.product-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--color-accent);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
  z-index: 2;
}
.product-body {
  padding: 22px 24px 28px;
}
.product-body h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-primary);
}
.product-body .product-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 14px;
  line-height: 1.5;
}
.product-specs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.product-specs span {
  font-size: 0.75rem;
  background: var(--color-gray-100);
  padding: 5px 10px;
  border-radius: 4px;
  color: var(--color-text-light);
  font-weight: 500;
}
.product-body .btn {
  width: 100%;
  justify-content: center;
  font-size: 0.85rem;
  padding: 10px 20px;
}

/* --- About Section --- */
.about .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about-card {
  background: var(--color-primary);
  color: #fff;
  padding: 30px 22px;
  border-radius: var(--radius-lg);
  text-align: center;
}
.about-card:nth-child(2) { background: var(--color-accent); }
.about-card:nth-child(3) { background: var(--color-primary-light); }
.about-card:nth-child(4) { background: var(--color-gold); color: var(--color-primary); }

.about-card .about-card-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}
.about-card h4 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 4px;
}
.about-card p {
  font-size: 0.8rem;
  opacity: 0.8;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}
.about-feature {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.about-feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.about-feature h5 {
  font-weight: 700;
  margin-bottom: 3px;
}
.about-feature p {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

/* --- Why Us / Value Props --- */
.why-us {
  background: var(--color-primary);
  color: #fff;
}
.why-us .section-label { color: var(--color-accent); }
.why-us .section-title { color: #fff; }
.why-us .section-subtitle { color: rgba(255,255,255,0.7); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
  margin-top: 50px;
}

.why-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: all var(--transition);
}
.why-card:hover {
  background: rgba(255,255,255,0.10);
  transform: translateY(-4px);
}
.why-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 18px;
}
.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.why-card p {
  font-size: 0.88rem;
  opacity: 0.75;
  line-height: 1.6;
}

/* --- Certifications --- */
.certs {
  text-align: center;
}
.certs-marquee {
  display: flex;
  gap: 60px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 40px;
}
.cert-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 30px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  min-width: 120px;
  transition: var(--transition);
}
.cert-item:hover { box-shadow: var(--shadow-md); }
.cert-icon {
  font-size: 2.4rem;
}
.cert-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
}
.cert-desc {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

/* --- Markets Section --- */
.markets {
  background: var(--color-off-white);
  text-align: center;
}
.markets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-top: 40px;
}
.market-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px 18px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: default;
}
.market-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.market-flag {
  font-size: 3rem;
  margin-bottom: 10px;
}
.market-card h4 {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary);
}
.market-card p {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* --- Contact Section --- */
.contact .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.contact-info h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  margin-bottom: 20px;
}
.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
  align-items: flex-start;
}
.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-item h5 {
  font-weight: 700;
  margin-bottom: 3px;
}
.contact-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.contact-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-200);
}
.contact-form h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: 6px;
}
.contact-form .form-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 22px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--color-text);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color var(--transition);
  background: var(--color-off-white);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: #fff;
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* --- Footer --- */
.footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--color-accent); }

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 10px;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--color-accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
}

/* --- WhatsApp Float --- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: #fff;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  z-index: 999;
  transition: var(--transition);
  cursor: pointer;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37,211,102,0.5);
}

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: 100px;
  right: 28px;
  background: var(--color-green-dark);
  color: #fff;
  padding: 14px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-content p { max-width: 100%; margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }
  .hero { padding: 60px 0 70px; }
  .hero-content h1 { font-size: 2.3rem; }

  .about .container { grid-template-columns: 1fr; gap: 40px; }
  .contact .container { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px 24px;
    box-shadow: var(--shadow-md);
    gap: 0;
  }
  .nav.open a {
    padding: 14px 0;
    border-bottom: 1px solid var(--color-gray-200);
    border-radius: 0;
  }
  .nav.open a.nav-cta { margin: 8px 0 0; text-align: center; border-radius: var(--radius); }
  .hamburger { display: flex; }

  .section { padding: 50px 0; }
  .section-title { font-size: 1.8rem; }
  .hero-content h1 { font-size: 1.9rem; }
  .hero-stats { flex-direction: column; gap: 16px; align-items: center; }

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

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .topbar .container { justify-content: center; }
  .whatsapp-float { bottom: 20px; right: 16px; width: 48px; height: 48px; font-size: 1.4rem; }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.6rem; }
  .btn { padding: 12px 22px; font-size: 0.85rem; }
  .product-grid { grid-template-columns: 1fr; }
  .markets-grid { grid-template-columns: 1fr 1fr; }
  .certs-marquee { gap: 20px; }
}