/*
  Tai Wah Trade — dark theme styles
  Simple, modern, responsive. No frameworks.
*/

:root {
  --bg: #0b0c10;
  --panel: #11131a;
  --panel-2: #141826;
  --text: #e6e8ee;
  --muted: #a9b0c0;
  --brand: #60a5fa;
  --brand-2: #34d399;
  --line: rgba(255,255,255,0.06);
  --glow: 0 10px 40px rgba(96,165,250,0.25);
}

* { box-sizing: border-box }
html, body { height: 100% }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(1200px 800px at 80% -10%, rgba(96,165,250,0.12), transparent 60%),
              radial-gradient(900px 700px at -10% 20%, rgba(52,211,153,0.10), transparent 50%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: min(1100px, 92vw); margin: 0 auto; }
.section { padding: 72px 0; }
.section.alt { background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.00)); }
.section-lead { color: var(--muted); margin-top: -8px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(140%) blur(10px); background: rgba(11,12,16,0.6); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.4px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #081018; font-weight: 800; font-size: 14px; box-shadow: var(--glow); }
.brand-text { font-weight: 800; font-size: 16px; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; }
.nav-toggle .bar { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; }
.nav-menu { list-style: none; display: flex; gap: 18px; margin: 0; padding: 0; }
.nav-menu a { color: var(--muted); font-weight: 500; }
.nav-menu a:hover { color: var(--text); }

/* Hero */
.hero { position: relative; min-height: 72vh; display: grid; place-items: center; text-align: center; overflow: clip; }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: brightness(0.45) saturate(0.9); transform: scale(1.04); }
.hero .overlay { position: absolute; inset: 0; background: radial-gradient(800px 400px at 70% 10%, rgba(96,165,250,0.20), transparent 60%); }
.hero-content { position: relative; z-index: 1; padding: 96px 0; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.1; margin: 0 0 14px; letter-spacing: -0.02em; }
.hero p { color: var(--muted); max-width: 820px; margin: 0 auto 24px; font-size: clamp(16px, 2.5vw, 20px); }

.cta { display: inline-flex; gap: 12px; align-items: center; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 16px; border-radius: 12px; border: 1px solid var(--line); color: var(--text); background: rgba(255,255,255,0.04); font-weight: 600; letter-spacing: 0.2px; }
.button:hover { text-decoration: none; border-color: rgba(255,255,255,0.2); }
.button.primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #0b1119; box-shadow: var(--glow); }
.button.ghost { background: transparent; }

/* Grid and cards */
.grid.two { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; align-items: center; }
.media.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.25); }
.cards { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 18px; }
.card h3 { margin: 6px 0 6px; }
.card .emoji { font-size: 26px; }
.note { color: var(--muted); margin-top: 12px; }

.list .item { background: var(--panel-2); border: 1px solid var(--line); padding: 18px; border-radius: 14px; }

/* Contact */
.contact-list { list-style: none; padding: 0; margin: 12px 0 18px; }
.contact-list li { margin: 6px 0; }
.muted { color: var(--muted); font-size: 14px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: rgba(255,255,255,0.02); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 24px 0; color: var(--muted); }
.site-footer nav a { color: var(--muted); margin-left: 14px; }
.site-footer nav a:hover { color: var(--text); }

/* Responsive */
@media (max-width: 980px) {
  .grid.two { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav-toggle { display: inline-block; }
  .nav-menu { position: absolute; right: 16px; top: 56px; background: var(--panel); border: 1px solid var(--line); padding: 12px; border-radius: 12px; display: none; flex-direction: column; width: 200px; }
  .nav-menu.open { display: flex; }
  .cards { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}