/* ============================================
   Helper Eye — style.css
   ============================================ */

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

:root {
  --primary: #00e5ff;
  --primary-dim: rgba(0, 229, 255, 0.10);
  --primary-glow: rgba(0, 229, 255, 0.30);
  --bg: #080c14;
  --bg2: #0d1320;
  --bg3: #111825;
  --text: #e8edf5;
  --text-dim: #7a8ba8;
  --border: rgba(0, 229, 255, 0.16);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── LANGUAGE SWITCHER ── */
.zh { display: none; }
.en { display: inline; }

body.lang-zh .zh { display: inline; }
body.lang-zh .en { display: none; }

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  height: 62px;
  background: rgba(8, 12, 20, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 0.5px solid var(--border);
}
.nav-logo {
  font-family: 'Orbitron', monospace;
  font-weight: 900;
  font-size: 19px;
  color: var(--primary);
  letter-spacing: 2px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo span { color: var(--text); }
.nav-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 50%;
  flex-shrink: 0;
}
.nav-right { display: flex; align-items: center; gap: 28px; }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a {
  font-size: 13px;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.4px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }
.lang-toggle {
  display: flex;
  border: 0.5px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
}
.lang-btn {
  padding: 5px 14px;
  cursor: pointer;
  color: var(--text-dim);
  background: transparent;
  border: none;
  font-size: 12px;
  letter-spacing: 0.5px;
  transition: all 0.2s;
  font-family: inherit;
}
.lang-btn.active {
  background: var(--primary);
  color: #050810;
  font-weight: 700;
}

/* ── HERO ── */
.hero {
  min-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 5% 80px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 60%, rgba(0,229,255,0.07) 0%, transparent 70%);
}
.grid-bg {
  position: absolute; inset: 0; z-index: 0; opacity: 0.035;
  background-image:
    linear-gradient(var(--primary) 1px, transparent 1px),
    linear-gradient(90deg, var(--primary) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-badge {
  position: relative; z-index: 1;
  display: inline-block;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  border: 0.5px solid var(--border);
  padding: 6px 18px;
  border-radius: 20px;
  margin-bottom: 24px;
  background: var(--primary-dim);
}
.hero h1 {
  position: relative; z-index: 1;
  font-family: 'Orbitron', monospace;
  font-weight: 900;
  font-size: clamp(44px, 9vw, 92px);
  line-height: 1.04;
  letter-spacing: -1px;
  margin-bottom: 14px;
}
.hero h1 .accent { color: var(--primary); }
.hero-sub {
  position: relative; z-index: 1;
  font-size: clamp(14px, 2vw, 17px);
  color: var(--text-dim);
  max-width: 540px;
  margin: 0 auto 36px;
  font-weight: 300;
}
.hero-cta {
  position: relative; z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--primary);
  color: #050810;
  font-family: 'Orbitron', monospace;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 1.5px;
  padding: 13px 30px;
  border-radius: 4px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
}
.hero-cta:hover { opacity: 0.85; transform: translateY(-2px); }
.eye-svg {
  position: relative; z-index: 1;
  margin-top: 56px;
  width: 110px; height: 55px;
}

/* ── HERO LOGO ── */
.hero-logo-wrap {
  position: relative;
  z-index: 1;
  margin-top: 56px;
  width: 110px;
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.hero-logo-img {
  width: 110px;
  height: 110px;
  object-fit: contain;
  border-radius: 50%;
  position: relative;
  z-index: 2;
  animation: hero-logo-pulse 4s ease-in-out infinite;
}
@keyframes hero-logo-pulse {
  0%, 100% { filter: drop-shadow(0 0 10px rgba(0,229,255,0.5)); }
  50%       { filter: drop-shadow(0 0 22px rgba(0,229,255,0.9)); }
}
.hero-logo-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,229,255,0.35);
  animation: hero-ring-expand 3s ease-out infinite;
}
.hero-logo-ring.r1 {
  width: 110px; height: 110px;
  animation-delay: 0s;
}
.hero-logo-ring.r2 {
  width: 110px; height: 110px;
  animation-delay: 1.5s;
}
@keyframes hero-ring-expand {
  0%   { transform: scale(1);   opacity: 0.5; }
  100% { transform: scale(1.9); opacity: 0; }
}

/* ── SECTIONS ── */
section { padding: 72px 5%; }
.bg-dark { background: var(--bg3); }
.section-label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 10px;
}
.section-title {
  font-family: 'Orbitron', monospace;
  font-weight: 700;
  font-size: clamp(22px, 4vw, 34px);
  margin-bottom: 44px;
  color: var(--text);
}

/* ── GALLERY ── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  align-items: stretch;
}
.gallery-card {
  border-radius: 12px;
  overflow: hidden;
  border: 0.5px solid var(--border);
  background: var(--bg2);
  transition: border-color 0.3s, transform 0.3s;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}
.gallery-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.gallery-wide { grid-column: span 2; }
.gallery-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}
.gallery-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg3) 0%, #0a1020 100%);
  border-bottom: 0.5px solid var(--border);
  gap: 12px;
  color: var(--text-dim);
}
.gallery-placeholder svg { opacity: 0.35; }
.placeholder-text {
  font-size: 11px;
  letter-spacing: 1px;
  opacity: 0.5;
}
.gallery-label {
  padding: 14px 16px;
  height: 64px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.gallery-label-title { font-size: 14px; font-weight: 700; color: var(--text); margin-bottom: 3px; }
.gallery-label-sub { font-size: 12px; color: var(--text-dim); }

/* ── PRODUCT CARDS ── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.product-card {
  background: var(--bg2);
  border: 0.5px solid var(--border);
  border-radius: 12px;
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.product-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.product-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.product-card:hover::before { opacity: 1; }
.card-num {
  font-family: 'Orbitron', monospace;
  font-size: 10px;
  color: var(--primary);
  letter-spacing: 2px;
  margin-bottom: 18px;
  opacity: 0.6;
}
.card-title { font-weight: 700; font-size: 16px; margin-bottom: 8px; color: var(--text); }
.card-desc { font-size: 13px; color: var(--text-dim); line-height: 1.8; }
.card-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 18px; }
.tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  border: 0.5px solid var(--border);
  color: var(--primary);
  background: var(--primary-dim);
}

/* ── FEATURES ── */
.features-wrap {
  background: var(--bg2);
  border: 0.5px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 0.5px solid var(--border);
}
.feature-row:last-child { border-bottom: none; }
.feature-cell { padding: 28px 32px; border-right: 0.5px solid var(--border); }
.feature-cell:last-child { border-right: none; }
.feature-name { font-weight: 700; font-size: 14px; margin-bottom: 10px; color: var(--text); }
.feature-detail { font-size: 13px; color: var(--text-dim); line-height: 1.9; }

/* ── SPEC TABLE ── */
.spec-wrap {
  background: var(--bg2);
  border: 0.5px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.spec-table tr { border-bottom: 0.5px solid var(--border); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table td { padding: 13px 20px; }
.spec-table td:first-child { color: var(--text-dim); width: 38%; font-size: 13px; }
.spec-table td:last-child { color: var(--text); font-weight: 500; }
.spec-table tr:hover td { background: var(--primary-dim); }

/* ── CTA ── */
.cta-section {
  text-align: center;
  padding: 90px 5%;
  position: relative;
  overflow: hidden;
}
.cta-ring {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 0.5px solid var(--border);
  pointer-events: none;
}
.r1 { width: 500px; height: 500px; }
.r2 { width: 800px; height: 800px; border-color: rgba(0,229,255,0.05); }
.cta-title {
  font-family: 'Orbitron', monospace;
  font-weight: 900;
  font-size: clamp(26px, 5vw, 50px);
  margin-bottom: 14px;
  position: relative; z-index: 1;
}
.cta-sub {
  font-size: 15px;
  color: var(--text-dim);
  margin-bottom: 36px;
  position: relative; z-index: 1;
}
.cta-section .section-label { position: relative; z-index: 1; }
.cta-section .hero-cta { position: relative; z-index: 1; }

/* ── FOOTER ── */
footer {
  border-top: 0.5px solid var(--border);
  padding: 28px 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.footer-logo {
  font-family: 'Orbitron', monospace;
  font-weight: 900;
  font-size: 15px;
  color: var(--primary);
  letter-spacing: 2px;
}
.footer-copy { font-size: 12px; color: var(--text-dim); }

/* ── HAMBURGER BUTTON ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: transparent;
  border: 0.5px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  padding: 6px;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  width: 100%; height: 1.5px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── MOBILE NAV OVERLAY ── */
.nav-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 98;
  backdrop-filter: blur(2px);
}
.nav-overlay.active { display: block; }

/* ── MOBILE LANG (inside menu) ── */
.mobile-lang { display: none; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  /* Hamburger visible */
  .hamburger { display: flex; }

  /* Desktop lang toggle hidden on mobile */
  .lang-toggle { display: none; }

  /* Nav links: slide-in drawer from top */
  .nav-links {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 62px; left: 0; right: 0;
    background: rgba(8,12,20,0.98);
    backdrop-filter: blur(16px);
    border-bottom: 0.5px solid var(--border);
    padding: 16px 0 24px;
    gap: 0;
    z-index: 99;
    transform: translateY(-110%);
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
  }
  .nav-links.open { transform: translateY(0); }

  .nav-links li a {
    display: block;
    padding: 14px 28px;
    font-size: 15px;
    color: var(--text-dim);
    border-bottom: 0.5px solid rgba(0,229,255,0.06);
  }
  .nav-links li:last-child a { border-bottom: none; }
  .nav-links li a:hover { color: var(--primary); background: var(--primary-dim); }

  /* Mobile lang toggle inside menu */
  .mobile-lang {
    display: flex;
    gap: 10px;
    padding: 16px 28px 0;
  }
  .mobile-lang .lang-btn {
    flex: 1;
    padding: 8px;
    border-radius: 6px;
    border: 0.5px solid var(--border);
    font-size: 13px;
  }
  .mobile-lang .lang-btn.active {
    background: var(--primary);
    color: #050810;
    font-weight: 700;
  }

  /* Section layout fixes */
  .feature-row { grid-template-columns: 1fr; }
  .feature-cell { border-right: none; border-bottom: 0.5px solid var(--border); }
  .gallery-wide { grid-column: span 1; }

  /* Hero padding */
  .hero { padding: 60px 5% 40px; }
  section { padding: 52px 5%; }
}