/* ═══════════════════════════════════════════
   Dulizhan Machinery — Design System
   ═══════════════════════════════════════════ */

:root {
  --navy: #1B2B4B;
  --orange: #C85A2B;
  --green: #2E7D5E;
  --cream: #F8F7F4;
  --near-black: #0F172A;
  --white: #FFFFFF;
  --gray-100: #F3F4F6;
  --gray-200: #E2E4E9;
  --gray-400: #9CA3AF;
  --gray-600: #4B5563;
  --gray-800: #1F2937;

  --font-display: 'Barlow Condensed', sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --max-width: 1400px;
  --radius: 4px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--gray-800);
  background: var(--cream);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { color: var(--navy); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--orange); }

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

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-sm);
}

.display-hero {
  font-size: clamp(2.1rem, 4.5vw, 3.9rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.015em;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  display: inline-block;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--orange);
  margin-top: var(--space-sm);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.85rem 2rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  font-size: 0.9rem;
  text-decoration: none;
}
.btn-primary { background: var(--orange); color: var(--white); border-color: var(--orange); }
.btn-primary:hover { background: #b04f26; border-color: #b04f26; color: var(--white); }
.btn-outline { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: var(--white); }
.btn-white { background: var(--white); color: var(--navy); border-color: var(--white); }
.btn-white:hover { background: transparent; color: var(--white); border-color: var(--white); }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(27, 43, 75, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.header-inner .logo { margin-right: auto; }
.logo { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--white); text-transform: uppercase; letter-spacing: 0.08em; flex-shrink: 0; }
.logo span { color: var(--orange); }

/* ── Desktop nav (inline, horizontal) ─────── */
@media (min-width: 769px) {
  .site-header .container { display: flex; align-items: center; }
  .header-inner { flex-shrink: 0; }
  .main-nav { display: flex; align-items: center; gap: var(--space-sm); margin-left: auto; }
  .main-nav a { color: rgba(255,255,255,0.8); font-size: 0.85rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; padding: 0.4rem 0.8rem; transition: color 0.2s; white-space: nowrap; }
  .main-nav a:hover { color: var(--orange); }
  .lang-switcher { display: flex; align-items: center; gap: 0.25rem; margin-left: var(--space-sm); padding-left: var(--space-sm); border-left: 1px solid rgba(255,255,255,0.15); flex-shrink: 0; }
  .lang-switcher select { background: transparent; color: rgba(255,255,255,0.8); border: 1px solid rgba(255,255,255,0.2); border-radius: var(--radius); padding: 0.3rem 0.5rem; font-size: 0.8rem; cursor: pointer; font-family: var(--font-body); }
  .lang-switcher select option { color: var(--near-black); }
}

/* ── Hamburger ─────────────────────────── */
.hamburger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
  z-index: 200; width: 40px; height: 40px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: all 0.3s ease; transform-origin: center;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.hero { position: relative; min-height: 85vh; display: flex; align-items: center; background: var(--navy); overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(27,43,75,0.85) 0%, rgba(27,43,75,0.4) 100%); z-index: 1; }
.hero-bg { position: absolute; inset: 0; object-fit: cover; width: 100%; height: 100%; }
.hero-content { position: relative; z-index: 2; }
.hero-content h1 { color: var(--white); margin-bottom: var(--space-md); }
.hero-content p { color: rgba(255,255,255,0.85); font-size: 1.15rem; line-height: 1.7; margin-bottom: var(--space-md); }
.hero-actions { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

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

.section { padding: var(--space-xl) 0; }
.section-dark { background: var(--navy); color: var(--white); }
.section-light { background: var(--white); }
.section-cream { background: var(--cream); }

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: var(--space-md); }
.product-card { background: var(--white); border: 1px solid var(--gray-200); transition: all 0.3s ease; display: flex; flex-direction: column; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.product-card-image { width: 100%; height: 240px; object-fit: cover; background: var(--gray-100); }
.product-card-body { padding: var(--space-md); flex: 1; display: flex; flex-direction: column; }
.product-card-body h3 { font-size: 1.3rem; margin-bottom: var(--space-xs); }
.product-card-body p { color: var(--gray-600); font-size: 0.9rem; flex: 1; margin-bottom: var(--space-sm); }
.spec-mini { display: flex; gap: var(--space-sm); padding: var(--space-sm) 0; border-top: 1px solid var(--gray-200); margin-top: auto; }
.spec-mini-item { font-family: var(--font-mono); font-size: 0.75rem; color: var(--gray-600); }
.spec-mini-item strong { display: block; font-family: var(--font-display); font-size: 0.95rem; color: var(--navy); }

.spec-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1px; background: var(--gray-200); border: 1px solid var(--gray-200); }
.spec-card { background: var(--white); padding: var(--space-md); display: flex; flex-direction: column; gap: 0.25rem; }
.spec-card .spec-value { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--navy); }
.spec-card .spec-label { font-family: var(--font-mono); font-size: 0.75rem; color: var(--gray-400); text-transform: uppercase; letter-spacing: 0.05em; }
.spec-card .spec-desc { font-size: 0.85rem; color: var(--gray-600); }

.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--space-md); }
.article-card { background: var(--white); border: 1px solid var(--gray-200); overflow: hidden; transition: all 0.3s ease; }
.article-card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.06); }
.article-card-image { width: 100%; height: 200px; object-fit: cover; background: var(--gray-100); }
.article-card-body { padding: var(--space-md); }
.article-card-body .date { font-family: var(--font-mono); font-size: 0.75rem; color: var(--gray-400); margin-bottom: var(--space-xs); }
.article-card-body h3 { font-size: 1.15rem; margin-bottom: var(--space-xs); }
.article-card-body p { font-size: 0.9rem; color: var(--gray-600); margin: 0; }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-lg); }
.feature-item { }
.feature-item h3 { font-size: 1.2rem; padding-bottom: calc(var(--space-xs) + 6px); margin-bottom: var(--space-xs); position: relative; }
.feature-item h3::after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 2px; background: var(--orange); }
.feature-item p { font-size: 0.95rem; color: var(--gray-600); line-height: 1.7; }

.stats-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1px; background: rgba(255,255,255,0.1); }
.stat-item { text-align: center; padding: var(--space-lg) var(--space-md); }
.stat-number { font-family: var(--font-display); font-size: 3rem; font-weight: 800; color: var(--orange); line-height: 1; display: block; }
.stat-label { font-family: var(--font-body); font-size: 0.85rem; color: rgba(255,255,255,0.7); text-transform: uppercase; letter-spacing: 0.06em; margin-top: var(--space-xs); }

.cta-section { text-align: center; padding: var(--space-xl) 0; }
.cta-section h2 { font-size: clamp(2rem, 4vw, 3.2rem); margin-bottom: var(--space-sm); }
.cta-section p { color: var(--gray-600); max-width: 500px; margin: 0 auto var(--space-md); }

.breadcrumbs { display: flex; gap: 0.5rem; align-items: center; padding: var(--space-sm) 0; font-size: 0.85rem; color: var(--gray-400); font-family: var(--font-mono); }
.breadcrumbs a { color: var(--gray-600); }
.breadcrumbs a:hover { color: var(--orange); }
.breadcrumbs span { color: var(--navy); }

.inquiry-form { background: var(--white); border: 1px solid var(--gray-200); padding: var(--space-lg); }
.inquiry-form .form-group { margin-bottom: var(--space-md); }
.inquiry-form label { display: block; font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gray-600); margin-bottom: 0.3rem; }
.inquiry-form input, .inquiry-form textarea, .inquiry-form select { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--gray-200); font-family: var(--font-body); font-size: 0.95rem; background: var(--cream); transition: border-color 0.2s; }
.inquiry-form input:focus, .inquiry-form textarea:focus { outline: none; border-color: var(--navy); background: var(--white); }

.site-footer { background: var(--near-black); color: rgba(255,255,255,0.7); padding: var(--space-xl) 0 var(--space-md); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-lg); margin-bottom: var(--space-lg); }
.footer-brand p { font-size: 0.85rem; line-height: 1.7; max-width: 320px; }
.footer-col h4 { color: var(--white); font-family: var(--font-display); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-sm); }
.footer-col a { display: block; color: rgba(255,255,255,0.5); font-size: 0.85rem; padding: 0.2rem 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--orange); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: var(--space-md); display: flex; justify-content: space-between; align-items: center; font-size: 0.8rem; flex-wrap: wrap; gap: var(--space-sm); }

.page-header { background: var(--navy); padding: var(--space-xl) 0 var(--space-lg); color: var(--white); }
.page-header h1 { color: var(--white); font-size: clamp(2.5rem, 4vw, 3.5rem); }
.page-header p { color: rgba(255,255,255,0.7); max-width: 600px; }

.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
.product-gallery img { width: 100%; height: auto; border: 1px solid var(--gray-200); }

.article-content { max-width: 760px; line-height: 1.8; font-size: 1.05rem; }
.article-content h2 { font-size: 1.8rem; margin-top: var(--space-lg); }

/* ── Video: natural aspect ratio, no distortion ── */
.article-content video,
.product-detail video,
.catalog-content video {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    background: #000;
    border-radius: 4px;
}

.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
.contact-info-item { display: flex; gap: var(--space-sm); margin-bottom: var(--space-md); }
.contact-info-item .icon { width: 44px; height: 44px; background: var(--navy); color: var(--white); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0; }
.contact-info-item h4 { font-size: 0.9rem; margin: 0 0 0.2rem; }
.contact-info-item p { font-size: 0.9rem; color: var(--gray-600); margin: 0; }

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .main-nav {
    display: flex;
    position: fixed;
    top: 72px; left: 0; right: 0;
    height: calc(100vh - 72px);
    height: calc(100dvh - 72px);
    background: rgba(27, 43, 75, 0.98);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 0;
    z-index: 150;
    opacity: 0; visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    overflow-y: auto;
    padding: 0.5rem 0 1.5rem;
    -webkit-overflow-scrolling: touch;
  }
  .main-nav.active { opacity: 1; visibility: visible; }
  .main-nav a {
    font-size: 1rem; padding: 0.65rem 1rem; color: var(--white);
    width: 100%; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
  }
  .main-nav a:last-of-type { border-bottom: none; }
  .lang-switcher {
    margin: 0.5rem 0 0; padding: 0.5rem 0 0; border-left: none; border-top: 1px solid rgba(255,255,255,0.15);
    width: 100%; justify-content: center; flex-shrink: 0;
  }
  .lang-switcher select { font-size: 0.95rem; padding: 0.4rem 0.8rem; }
  body.nav-locked { overflow: hidden; }
  .about-grid { grid-template-columns: 1fr; }
  .product-detail, .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero { min-height: 60vh; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid, .stats-bar { grid-template-columns: 1fr; }
  .product-grid, .article-grid { grid-template-columns: 1fr; }
}