/* NexGo EV design system */

:root {
  --color-primary: #100997;
  --color-primary-dark: #0b066b;
  --color-secondary: #3E5C76;
  --color-accent: #D9622B;
  --color-accent-dark: #b84f21;
  --color-text: #5A6570;
  --color-heading: #1A1D1F;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F6F7;
  --color-border: #E2E5E8;
  --font-heading: 'Barlow Condensed', sans-serif;
  --font-body: 'Inter', sans-serif;
  --container-width: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.1;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

a { color: inherit; text-decoration: none; }

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo-img { height: 36px; width: auto; }

.site-nav { display: flex; gap: 2rem; align-items: center; }

.site-nav a {
  font-family: var(--font-heading);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.9rem;
  color: var(--color-primary);
}

.site-nav a:hover { color: var(--color-primary-dark); }

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.9rem 2rem;
  border-radius: 2px;
  background: var(--color-primary);
  color: #fff;
  transition: background 0.2s ease;
}

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

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

/* Hero */
.hero {
  padding: 5rem 0 4rem;
  background: var(--color-bg-alt);
}

.hero .eyebrow {
  font-family: var(--font-heading);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.hero p.lede {
  max-width: 640px;
  font-size: 1.125rem;
  margin: 1.25rem 0 2rem;
}

/* Positioning pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pillar {
  border-top: 3px solid var(--color-primary);
  padding-top: 1rem;
}

.pillar h3 { margin-bottom: 0.5rem; color: var(--color-primary); }

.pillar p { font-size: 0.95rem; }

/* Feature list (model pages) */
.feature-list {
  list-style: none;
  margin-bottom: 2rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 1rem;
  color: var(--color-heading);
}

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
}

/* Fleet grid */
.section { padding: 4.5rem 0; }
.section-alt { background: var(--color-bg-alt); }

.section-heading { margin-bottom: 2.5rem; }
.section-heading p { max-width: 640px; margin-top: 0.75rem; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.model-card {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.model-card:hover { box-shadow: 0 8px 24px rgba(16, 9, 151, 0.12); transform: translateY(-2px); }

.model-card img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }

.model-card-body { padding: 1.25rem 1.25rem 1.5rem; display: flex; flex-direction: column; flex: 1; }

.model-card-body h3 { margin-bottom: 0.5rem; }

.model-card-body p { flex: 1; margin-bottom: 1rem; font-size: 0.95rem; }

.model-card-link {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

/* Detail / eye-candy gallery */
.detail-gallery {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.detail-gallery img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 4px;
}

/* Model page */
.model-hero {
  padding: 3.5rem 0;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.model-hero img { border-radius: 4px; }

.model-hero .model-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.spec-table th, .spec-table td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.spec-table th {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
  width: 40%;
}

.spec-table tr:nth-child(even) { background: var(--color-bg-alt); }

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.gallery img { aspect-ratio: 4 / 3; object-fit: cover; border-radius: 4px; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info dt {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--color-secondary);
  margin-top: 1.5rem;
}

.contact-info dd { margin-top: 0.25rem; }

.form-field { margin-bottom: 1.25rem; }

.form-field label {
  display: block;
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--color-secondary);
  margin-bottom: 0.4rem;
}

.form-field input, .form-field textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 1rem;
}

.form-field textarea { min-height: 120px; resize: vertical; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 3rem 0;
  background: var(--color-bg-alt);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-inner p { font-size: 0.9rem; }

.footer-logo { height: 28px; }

/* Fade-in-on-scroll */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .model-hero { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .detail-gallery { grid-template-columns: repeat(3, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 600px) {
  .card-grid { grid-template-columns: 1fr; }
  .detail-gallery { grid-template-columns: repeat(2, 1fr); }
  .site-nav { gap: 1rem; }
  .header-inner { height: 64px; }
}