/* ═══════════════════════════════════════════
   Aeltras 波欧诚顺 — Official Website Styles
   Company: aeltras.pl (pending trademark + domain)
   ═══════════════════════════════════════════ */

:root {
  --navy: #0F1923;
  --navy-mid: #1B2838;
  --navy-light: #243447;
  --slate: #3A4F63;
  --amber: #E8A838;
  --amber-light: #F5C96A;
  --amber-glow: rgba(232, 168, 56, 0.15);
  --cream: #FAF6F0;
  --white: #FFFFFF;
  --text-light: #C8D2DC;
  --text-muted: #8A9AAC;
  --green: #34C77B;
  --red: #E05454;
  --bg-light: #F5F2ED;
  --text-dark: #1B2838;
  --text-dark-muted: #5A6B7E;
  --card-light: #FFFFFF;
  --border-light: #E2DDD6;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body); background: var(--navy); color: var(--white);
  overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
body::before {
  content: ''; position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 9999;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; width: 100%; z-index: 100;
  padding: 20px 40px; display: flex; justify-content: space-between; align-items: center;
  background: linear-gradient(180deg, rgba(15,25,35,0.95) 0%, transparent 100%);
  backdrop-filter: blur(8px);
}
.lang-switcher {
  display: flex; align-items: center; gap: 0;
  background: var(--navy-light); border: 1px solid var(--slate);
  border-radius: 100px; padding: 3px; flex-shrink: 0;
}
.lang-btn {
  background: transparent; border: none; color: var(--text-muted);
  font-family: var(--font-body); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.5px; padding: 6px 14px; border-radius: 100px;
  cursor: pointer; transition: all 0.3s var(--ease-out); white-space: nowrap;
}
.lang-btn:hover { color: var(--white); }
.lang-btn.active { background: var(--amber); color: var(--navy); font-weight: 700; }
.nav-logo {
  font-family: var(--font-body); font-size: 1.5rem; font-weight: 700;
  color: var(--white); text-decoration: none; letter-spacing: 3px; text-transform: uppercase;
}
.nav-logo span { color: var(--amber); font-family: var(--font-body); font-weight: 300; letter-spacing: 2px; font-style: normal; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
  color: var(--text-muted); text-decoration: none; font-size: 0.85rem;
  font-weight: 500; letter-spacing: 1px; text-transform: uppercase; transition: color 0.3s;
}
.nav-links a:hover { color: var(--amber); }

/* ── HERO ── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; padding: 72px 24px 56px; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -20%; right: -15%;
  width: 70vw; height: 140vh;
  background: linear-gradient(135deg, var(--amber-glow) 0%, transparent 60%);
  transform: rotate(-12deg); pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 200px; background: linear-gradient(transparent, var(--navy)); pointer-events: none;
}
.hero-grid {
  max-width: 1520px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1.3fr; gap: 72px;
  align-items: center; position: relative; z-index: 2;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--navy-light); border: 1px solid var(--slate);
  border-radius: 100px; padding: 6px 16px; font-size: 0.78rem;
  color: var(--text-muted); letter-spacing: 1.5px; text-transform: uppercase;
  margin-bottom: 24px; animation: fadeUp 0.8s var(--ease-out) both;
}
.hero-badge::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 8px var(--green);
}
.hero h1 {
  font-family: var(--font-display); font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1.05; margin-bottom: 12px; animation: fadeUp 0.8s 0.1s var(--ease-out) both;
}
.hero h1 .brand-name { font-family: var(--font-body); font-weight: 700; letter-spacing: 5px; text-transform: uppercase; }
.hero h1 .chinese { display: block; font-size: 0.5em; color: var(--amber); letter-spacing: 8px; margin-bottom: 8px; font-style: italic; }
.hero-tagline {
  font-family: var(--font-display); font-size: 1.6rem; font-style: italic;
  color: var(--amber); margin-bottom: 20px; animation: fadeUp 0.8s 0.2s var(--ease-out) both;
}
.hero-desc {
  font-size: 1.05rem; line-height: 1.7; color: var(--text-light);
  max-width: 480px; margin-bottom: 36px; animation: fadeUp 0.8s 0.3s var(--ease-out) both;
}
.hero-cta {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--amber); color: var(--navy); padding: 16px 36px;
  border-radius: 60px; text-decoration: none; font-weight: 700;
  font-size: 0.9rem; letter-spacing: 0.5px;
  transition: all 0.4s var(--ease-out); animation: fadeUp 0.8s 0.4s var(--ease-out) both;
}
.hero-cta:hover { background: var(--amber-light); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(232,168,56,0.3); }
.hero-cta svg { transition: transform 0.3s; }
.hero-cta:hover svg { transform: translateX(4px); }

/* Hero carousel */
.hero-visual { position: relative; animation: fadeUp 0.8s 0.3s var(--ease-out) both; }
.hero-carousel {
  border-radius: 22px; overflow: hidden; position: relative;
  border: 1px solid rgba(232, 168, 56, 0.28);
  aspect-ratio: 3/2;
  background: var(--navy-light);
  box-shadow:
    0 30px 80px -10px rgba(0, 0, 0, 0.65),
    0 12px 28px -6px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(232, 168, 56, 0.08);
}
.hero-carousel-track {
  display: flex; width: 100%; height: 100%;
  transition: transform 0.6s var(--ease-out);
}
.hero-slide {
  min-width: 100%; height: 100%; position: relative;
  display: flex; align-items: center; justify-content: center;
  background-size: cover; background-position: center;
}
.hero-slide-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,25,35,0.1) 0%, rgba(15,25,35,0.65) 100%);
}
.hero-slide-caption {
  position: absolute; bottom: 44px; left: 24px; right: 24px; z-index: 2;
  font-size: 0.82rem; color: var(--cream); letter-spacing: 0.5px;
}
.hero-slide-caption strong { color: var(--amber); display: block; font-size: 1rem; margin-bottom: 2px; text-transform: uppercase; letter-spacing: 2px; }
.hero-carousel-dots {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; z-index: 5;
}
.hero-dot {
  width: 8px; height: 8px; border-radius: 50%; border: none; padding: 0;
  background: rgba(255,255,255,0.35); cursor: pointer;
  transition: all 0.3s var(--ease-out);
}
.hero-dot.active { background: var(--amber); transform: scale(1.3); }

/* Stats section */
.stats-section {
  background: var(--navy); padding: 0 40px 80px; position: relative; z-index: 2; margin-top: -60px;
}
.hero-stats-bar {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.stat-item {
  text-align: center; padding: 28px 16px;
  background: var(--navy-light); border: 1px solid var(--slate); border-radius: 16px;
  transition: all 0.4s var(--ease-out);
}
.stat-item:hover { border-color: var(--amber); transform: translateY(-4px); }
.stat-num { font-family: var(--font-display); font-size: 2rem; color: var(--amber); text-transform: uppercase; }
.stat-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; margin-top: 4px; }
.stat-unit { font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 1px; }

/* ── SECTION SHARED ── */
section { padding: 100px 40px; position: relative; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-label {
  font-size: 0.75rem; letter-spacing: 3px; text-transform: uppercase;
  color: var(--amber); margin-bottom: 12px; display: flex; align-items: center; gap: 12px;
}
.section-label::before { content: ''; width: 30px; height: 1px; background: var(--amber); }
.section-title { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); line-height: 1.15; margin-bottom: 16px; }
.section-subtitle { font-size: 1.05rem; color: var(--text-muted); max-width: 600px; line-height: 1.6; margin-bottom: 48px; }

/* ── SERVICES (LIGHT) ── */
.services { background: var(--bg-light); color: var(--text-dark); }
.services .section-title { color: var(--text-dark); }
.services .section-subtitle { color: var(--text-dark-muted); }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.services-row-label {
  font-size: 0.72rem; letter-spacing: 2px; text-transform: uppercase;
  color: var(--amber); margin-bottom: 16px; margin-top: 40px;
  display: flex; align-items: center; gap: 10px;
}
.services-row-label::after { content: ''; flex: 1; height: 1px; background: var(--border-light); }
.service-card {
  background: var(--card-light); border: 1px solid var(--border-light);
  border-radius: 16px; padding: 32px 24px;
  transition: all 0.5s var(--ease-out); position: relative; overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.service-card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 0; background: linear-gradient(transparent, rgba(232,168,56,0.08));
  transition: height 0.5s var(--ease-out);
}
.service-card:hover { border-color: var(--amber); transform: translateY(-6px); box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
.service-card:hover::after { height: 60%; }
.service-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--amber-glow); border: 1px solid rgba(232,168,56,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 20px; position: relative; z-index: 1;
}
.service-zh { font-size: 0.7rem; color: var(--amber); letter-spacing: 2px; margin-bottom: 6px; position: relative; z-index: 1; }
.service-zh:empty { display: none; }
.service-card h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 10px; position: relative; z-index: 1; color: var(--text-dark); }
.service-card p { font-size: 0.85rem; color: var(--text-dark-muted); line-height: 1.6; position: relative; z-index: 1; }
.services-catchall {
  margin-top: 40px; text-align: center;
  background: var(--card-light); border: 1px dashed var(--amber);
  border-radius: 16px; padding: 28px 36px;
}
.services-catchall p { font-size: 0.95rem; color: var(--text-dark-muted); margin-bottom: 12px; }
.services-catchall a { color: var(--amber); font-weight: 700; text-decoration: none; border-bottom: 2px solid var(--amber); padding-bottom: 2px; }

/* ── CASES (DARK) ── */
.cases { background: linear-gradient(180deg, var(--navy) 0%, var(--navy-mid) 100%); }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 60px; }
.case-card-item {
  background: var(--navy-light); border: 1px solid var(--slate);
  border-radius: 20px; overflow: hidden; transition: all 0.4s var(--ease-out);
}
.case-card-item:hover { border-color: var(--amber); transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
.case-card-img {
  width: 100%; height: 180px;
  background: linear-gradient(135deg, var(--slate) 0%, var(--navy) 100%);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.75rem; letter-spacing: 1px;
  text-transform: uppercase; border-bottom: 1px solid var(--slate);
}
.case-card-body { padding: 28px; }
.case-card-type { font-size: 0.72rem; color: var(--amber); letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 4px; }
.case-card-name { font-family: var(--font-display); font-size: 1.2rem; color: var(--cream); margin-bottom: 6px; }
.case-card-products { font-size: 0.82rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 20px; }
.case-price-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-top: 1px solid var(--slate); }
.case-price-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.case-price-val { font-family: var(--font-display); font-size: 1.1rem; }
.case-price-val.old { color: var(--red); text-decoration: line-through; }
.case-price-val.new { color: var(--green); }
.case-saving-badge {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 12px;
  background: rgba(52,199,123,0.1); border: 1px solid rgba(52,199,123,0.3);
  color: var(--green); padding: 6px 14px; border-radius: 60px; font-weight: 700; font-size: 0.85rem;
}
.case-note-text { font-size: 0.88rem; color: var(--text-light); line-height: 1.7; margin-bottom: 32px; max-width: 800px; }
.case-note-text strong { color: var(--amber); }

/* Category auto-scroll */
.category-label { font-size: 0.75rem; color: var(--text-muted); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px; }
.category-scroll-wrapper {
  overflow: hidden; position: relative;
  -webkit-mask-image: linear-gradient(to right, transparent, black 4%, black 96%, transparent);
  mask-image: linear-gradient(to right, transparent, black 4%, black 96%, transparent);
}
.category-scroll-track {
  display: flex; gap: 16px; width: max-content;
  animation: marquee 35s linear infinite;
}
.category-scroll-wrapper:hover .category-scroll-track { animation-play-state: paused; }
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 8px)); }
}
.category-item {
  flex: 0 0 160px;
  background: var(--navy-light); border: 1px solid var(--slate);
  border-radius: 14px; overflow: hidden; transition: all 0.3s var(--ease-out); cursor: default;
}
.category-item:hover { border-color: var(--amber); transform: translateY(-3px); }
.category-item-img {
  width: 100%; height: 100px;
  background: linear-gradient(135deg, var(--slate) 0%, var(--navy) 100%);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.65rem; letter-spacing: 1px; text-transform: uppercase;
}
.category-item-name { padding: 10px 14px; font-size: 0.82rem; color: var(--text-light); text-align: center; }

/* ── PROCESS (LIGHT) ── */
.process { background: var(--bg-light); color: var(--text-dark); }
.process .section-title { color: var(--text-dark); }
.process .section-subtitle { color: var(--text-dark-muted); }
.process-steps { display: flex; gap: 0; position: relative; margin-top: 16px; }
.process-steps::before {
  content: ''; position: absolute; top: 36px; left: 40px; right: 40px;
  height: 2px; background: linear-gradient(90deg, var(--amber) 0%, var(--border-light) 100%);
}
.step { flex: 1; text-align: center; position: relative; z-index: 1; }
.step-num {
  width: 72px; height: 72px; border-radius: 50%;
  background: var(--bg-light); border: 2px solid var(--amber);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px; font-family: var(--font-display);
  font-size: 1.3rem; color: var(--amber); transition: all 0.4s var(--ease-out);
}
.step:hover .step-num { background: var(--amber); color: var(--navy); transform: scale(1.1); }
.step-zh { font-size: 0.72rem; color: var(--amber); letter-spacing: 2px; margin-bottom: 4px; }
.step-zh:empty { display: none; }
.step h4 { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 6px; color: var(--text-dark); }
.step p { font-size: 0.82rem; color: var(--text-dark-muted); line-height: 1.5; padding: 0 8px; }

/* ── ABOUT / TEAM (DARK) ── */
.about { background: var(--navy); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.about-text { max-width: 520px; }
.about-text p { font-size: 1rem; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; }
.about-features { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.feature-tag {
  display: flex; align-items: center; gap: 8px;
  background: var(--navy-light); border: 1px solid var(--slate);
  padding: 10px 18px; border-radius: 60px; font-size: 0.85rem; color: var(--text-light);
}
.feature-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--amber); }
.team-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.team-card {
  background: var(--navy-light); border: 1px solid var(--slate);
  border-radius: 16px; padding: 24px; display: flex; flex-direction: column; align-items: center; text-align: center;
  transition: all 0.4s var(--ease-out);
}
.team-card:hover { border-color: var(--amber); transform: translateY(-4px); }
.team-photo {
  width: 100%; max-width: 200px; aspect-ratio: 3/4; border-radius: 12px;
  background: linear-gradient(135deg, var(--slate), var(--navy));
  border: 2px solid var(--amber); overflow: hidden; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.team-photo img { width: 100%; height: 100%; object-fit: cover; }
.team-photo .placeholder-text {
  font-family: var(--font-display); font-size: 2rem; color: var(--amber);
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.team-photo .placeholder-text small {
  font-family: var(--font-body); font-size: 0.5rem; color: var(--text-muted);
  letter-spacing: 1px; text-transform: uppercase;
}
.team-info h4 { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 4px; }
.team-role { font-size: 0.75rem; color: var(--amber); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px; }
.team-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.55; }

/* ── CONTACT (LIGHT) ── */
.contact { background: var(--bg-light); color: var(--text-dark); text-align: center; }
.contact .section-inner { max-width: 800px; }
.contact .section-title { margin-bottom: 12px; color: var(--text-dark); }
.contact .section-subtitle { margin: 0 auto 40px; max-width: 500px; color: var(--text-dark-muted); }
.contact-cards { display: flex; gap: 20px; justify-content: center; margin-bottom: 40px; }
.contact-card {
  background: var(--card-light); border: 1px solid var(--border-light);
  border-radius: 16px; padding: 28px 36px; text-align: center;
  transition: all 0.4s var(--ease-out); flex: 1; max-width: 220px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.contact-card:hover { border-color: var(--amber); transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
.contact-icon { font-size: 1.8rem; margin-bottom: 12px; }
.contact-card h4 { font-size: 0.72rem; letter-spacing: 2px; text-transform: uppercase; color: var(--text-dark-muted); margin-bottom: 6px; }
.contact-card p { font-family: var(--font-display); font-size: 1rem; color: var(--text-dark); }
.contact-cta {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--amber); color: var(--navy); padding: 18px 44px;
  border-radius: 60px; text-decoration: none; font-weight: 700;
  font-size: 1rem; letter-spacing: 0.5px;
  transition: all 0.4s var(--ease-out); border: none; cursor: pointer;
}
.contact-cta:hover { background: var(--amber-light); transform: translateY(-2px); box-shadow: 0 16px 48px rgba(232,168,56,0.3); }

/* Maps */
.contact-maps {
  display: flex; gap: 20px; justify-content: center;
  margin: 40px auto 0; max-width: 700px;
}
.contact-map {
  flex: 1; border-radius: 14px; overflow: hidden;
  border: 1px solid var(--border-light); box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.contact-map .map-clip {
  overflow: hidden; height: 200px; position: relative;
}
.contact-map iframe {
  width: 100%; height: 260px; border: 0; display: block;
  margin-top: -50px;
}
.contact-map-label {
  padding: 10px; text-align: center; font-size: 0.78rem;
  color: var(--text-dark-muted); letter-spacing: 1px; text-transform: uppercase;
  background: var(--card-light);
}

/* ── FOOTER ── */
footer {
  background: var(--navy); border-top: 1px solid var(--slate);
  padding: 40px; text-align: center;
}
.footer-logo {
  font-family: var(--font-body); font-size: 1.3rem; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase; margin-bottom: 8px;
}
.footer-logo span { color: var(--amber); font-family: var(--font-body); font-weight: 300; letter-spacing: 2px; font-style: normal; text-transform: none; }
footer p { font-size: 0.8rem; color: var(--text-muted); }
.footer-line { margin-top: 12px; font-size: 0.72rem; color: var(--slate); letter-spacing: 1px; }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  nav { padding: 16px 20px; }
  .nav-links { display: none; }
  section { padding: 60px 20px; }
  .hero { padding: 100px 20px 60px; }
  .hero-grid, .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-stats-bar { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .stats-section { padding: 0 20px 60px; margin-top: -40px; }
  .services-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .cases-grid { grid-template-columns: 1fr; gap: 16px; }
  .process-steps { flex-direction: column; gap: 20px; }
  .process-steps::before { display: none; }
  .step { display: flex; align-items: center; gap: 16px; text-align: left; }
  .step-num { width: 52px; height: 52px; margin: 0; flex-shrink: 0; }
  .contact-cards { flex-direction: column; align-items: center; }
  .contact-card { max-width: 100%; width: 100%; }
  .contact-maps { flex-direction: column; }
  .lang-switcher { padding: 2px; }
  .lang-btn { font-size: 0.65rem; padding: 4px 10px; }
  .team-cards { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .services-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.4rem; }
}