/* ===== Black Coffee — Shared Dark Theme ===== */
:root {
  --bg: #14100c;
  --bg-soft: #1e1712;
  --card: #241b14;
  --card-border: #3a2c20;
  --cream: #f3e9d8;
  --muted: #b6a48c;
  --accent: #e0a458;
  --accent-soft: #c98a3e;
  --line: #3a2c20;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--cream);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans TC", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
img { max-width: 100%; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(20,16,12,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 20px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--cream); font-weight: 800; font-size: 15px;
  letter-spacing: 1px;
}
.brand .logo { font-size: 22px; }
.brand small { display: block; font-size: 10px; font-weight: 400; color: var(--muted); letter-spacing: 1.5px; }
.nav-links {
  display: flex; list-style: none; gap: 6px;
}
.nav-links a {
  color: var(--cream); padding: 8px 14px; border-radius: 8px;
  font-size: 14px; transition: background .15s, color .15s;
}
.nav-links a:hover { background: var(--card); color: var(--accent); }
.nav-links a.active { background: var(--card); color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 12px; }

/* Language switcher */
.lang-switch { position: relative; }
.lang-btn {
  background: var(--card); border: 1px solid var(--card-border);
  color: var(--cream); padding: 7px 14px; border-radius: 8px;
  cursor: pointer; font-size: 13px; transition: border-color .15s;
}
.lang-btn:hover { border-color: var(--accent-soft); }
.lang-menu {
  display: none; position: absolute; right: 0; top: calc(100% + 8px);
  background: var(--bg-soft); border: 1px solid var(--card-border);
  border-radius: 10px; min-width: 160px; overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,.4);
}
.lang-menu.open { display: block; }
.lang-menu a {
  display: block; padding: 10px 16px; color: var(--cream); font-size: 14px;
}
.lang-menu a:hover { background: var(--card); }
.lang-menu a.current { color: var(--accent); }

/* Mobile toggle */
.menu-toggle {
  display: none; background: none; border: none; color: var(--cream);
  font-size: 22px; cursor: pointer; padding: 4px 8px;
}

/* ===== Hero ===== */
.hero {
  padding: 90px 0 80px; text-align: left;
  background:
    radial-gradient(ellipse 600px 300px at 80% -10%, rgba(224,164,88,.12), transparent),
    radial-gradient(ellipse 500px 260px at 10% 110%, rgba(201,138,62,.08), transparent);
}
.hero h1 {
  font-size: clamp(34px, 6vw, 58px); font-weight: 800; line-height: 1.15;
  margin-bottom: 18px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .subtitle {
  font-size: clamp(16px, 2vw, 19px); color: var(--muted);
  max-width: 620px; margin-bottom: 28px;
}
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 999px;
  font-weight: 700; font-size: 14px; cursor: pointer; border: none;
  transition: transform .15s, background .15s;
}
.btn-primary { background: var(--accent); color: #1a120b; }
.btn-primary:hover { background: #f0b96e; transform: translateY(-2px); }
.btn-outline {
  background: transparent; color: var(--cream);
  border: 1px solid var(--card-border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section--tint { background: var(--bg-soft); }
.section-head { margin-bottom: 44px; }
.kicker {
  font-size: 12px; color: var(--accent); letter-spacing: 2px;
  text-transform: uppercase; font-weight: 600;
}
.section-head h2 {
  font-size: clamp(26px, 3.5vw, 36px); font-weight: 700; margin-top: 8px;
}
.section-head p { color: var(--muted); margin-top: 12px; max-width: 640px; }

/* ===== Card grid ===== */
.card-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 12px; padding: 28px 24px; display: block;
  transition: transform .2s, border-color .2s;
}
a.card:hover { transform: translateY(-4px); border-color: var(--accent-soft); }
.card .icon { font-size: 28px; margin-bottom: 14px; display: block; }
.card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--cream); }
.card p { font-size: 14.5px; color: var(--muted); }
.card .more {
  display: inline-block; margin-top: 14px; font-size: 13px; color: var(--accent);
}

/* ===== About / Stats ===== */
.about-wrap {
  display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: center;
}
.about-wrap p { color: var(--muted); margin-bottom: 16px; font-size: 15.5px; }
.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 24px;
}
.stat b {
  display: block; font-size: 28px; font-weight: 800; color: var(--accent);
}
.stat span { font-size: 13px; color: var(--muted); }
.about-visual {
  font-size: 120px; text-align: center; opacity: .9;
}

/* ===== Contact ===== */
.contact-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
}
.contact-info p { color: var(--muted); margin: 12px 0 24px; }
.contact-channels { display: flex; flex-direction: column; gap: 14px; }
.channel {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px; background: var(--card);
  border: 1px solid var(--card-border); border-radius: 12px;
  color: var(--cream); transition: border-color .15s;
}
.channel:hover { border-color: var(--accent-soft); }
.channel .ci { font-size: 22px; }
.channel small { display: block; color: var(--muted); font-size: 12px; }

.contact-form form {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 12px; padding: 28px;
}
.contact-form label {
  display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; margin-top: 14px;
}
.contact-form label:first-child { margin-top: 0; }
.contact-form input, .contact-form textarea {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--card-border);
  border-radius: 8px; padding: 11px 14px; color: var(--cream);
  font-size: 14px; font-family: inherit; resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--accent);
}
.contact-form .btn { margin-top: 20px; width: 100%; }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-soft); border-top: 1px solid var(--line);
  padding: 56px 0 28px; margin-top: 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 36px;
}
.footer-brand p { color: var(--muted); font-size: 13.5px; margin-top: 12px; max-width: 360px; }
.footer-brand b { color: var(--cream); }
.site-footer h4 {
  font-size: 13px; color: var(--cream); margin-bottom: 14px; letter-spacing: 1px;
}
.site-footer ul { list-style: none; }
.site-footer ul li { margin-bottom: 8px; }
.site-footer ul a { color: var(--muted); font-size: 14px; }
.site-footer ul a:hover { color: var(--accent); }
.copyright {
  text-align: center; color: var(--muted); font-size: 13px;
  border-top: 1px solid var(--line); padding-top: 24px;
}

/* ===== Business page extras ===== */
.process-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.process-step .n {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-family: "SF Mono", Consolas, monospace;
  margin-bottom: 14px; background: var(--bg-soft);
}
.process-step h3 { font-size: 16px; margin-bottom: 8px; }
.process-step p { font-size: 14px; color: var(--muted); }

.cta-band {
  text-align: center; padding: 90px 0;
  background: radial-gradient(ellipse 500px 240px at 50% 100%, rgba(224,164,88,.12), transparent);
}
.cta-band h2 { font-size: clamp(26px, 4vw, 38px); font-weight: 800; margin-bottom: 12px; }
.cta-band p { color: var(--muted); margin-bottom: 28px; }

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
  .about-wrap { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }

  .menu-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: var(--bg-soft); flex-direction: column; padding: 16px 24px;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; }
}
@media (max-width: 560px) {
  .card-grid, .card-grid.cols-3, .card-grid.cols-2 { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 50px; }
  .section { padding: 56px 0; }
}