/* style.css — Lotus Health / 莲花诊所
   Palette: Teal #0D9488 + White + Warm grey · Mobile-first */

:root {
  --teal: #0D9488;
  --teal-dark: #0B7A70;
  --teal-light: #CCFBF1;
  --ink: #1F2937;
  --grey: #6B7280;
  --warm: #F5F4F1;
  --line: #E5E3DE;
  --white: #FFFFFF;
  --shadow: 0 4px 20px rgba(0,0,0,.06);
  --radius: 14px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

:lang(zh-Hans) body,
html[lang="zh-Hans"] body { line-height: 1.8; }

img { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-dark); }

.container { width: min(1120px, 92%); margin: 0 auto; }

section { padding: 4rem 0; }
.section-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  text-align: center;
  margin-bottom: 2.5rem;
  color: var(--ink);
}

/* ---------- Navbar ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 0;
}
.logo { display: flex; align-items: center; gap: .55rem; font-weight: 700; font-size: 1.2rem; color: var(--ink); }
.logo-mark {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--teal); color: #fff;
  display: grid; place-items: center; font-size: 1rem;
}
.nav-menu { display: flex; align-items: center; gap: 1.4rem; list-style: none; }
.nav-menu a { color: var(--ink); font-weight: 500; }
.nav-menu a:hover { color: var(--teal); }
.nav-menu a.active { color: var(--teal); }

.lang-btn {
  border: 1px solid var(--teal); background: transparent; color: var(--teal);
  padding: .35rem .8rem; border-radius: 999px; font-weight: 600;
  cursor: pointer; font-size: .9rem; transition: .2s;
}
.lang-btn:hover { background: var(--teal); color: #fff; }

.nav-toggle { display: none; background: none; border: 0; font-size: 1.5rem; cursor: pointer; color: var(--ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: .8rem 1.6rem; border-radius: 999px;
  font-weight: 600; cursor: pointer; border: 2px solid transparent; transition: .2s;
  text-align: center;
}
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: var(--teal-dark); color: #fff; }
.btn-ghost { background: transparent; color: var(--teal); border-color: var(--teal); }
.btn-ghost:hover { background: var(--teal-light); }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    linear-gradient(rgba(11,122,112,.62), rgba(13,148,136,.62)),
    url("https://images.unsplash.com/photo-1576091160550-2173dba999ef?auto=format&fit=crop&w=1600&q=80") center/cover;
  color: #fff; text-align: center; padding: 6rem 0;
}
.hero h1 { font-size: clamp(2rem, 6vw, 3.4rem); margin-bottom: 1rem; }
.hero p { font-size: clamp(1.05rem, 2.5vw, 1.3rem); max-width: 640px; margin: 0 auto 2rem; opacity: .96; }
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-cta .btn-ghost { color: #fff; border-color: #fff; }
.hero-cta .btn-ghost:hover { background: rgba(255,255,255,.15); }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow);
  text-align: center;
}
.card .icon { font-size: 2.4rem; margin-bottom: .8rem; }
.card h3 { margin-bottom: .6rem; color: var(--ink); }
.card p { color: var(--grey); }

.alt { background: var(--warm); }

/* ---------- Doctor cards ---------- */
.doc-card { text-align: center; }
.doc-card img { width: 120px; height: 120px; border-radius: 50%; object-fit: cover; margin: 0 auto 1rem; border: 4px solid var(--teal-light); }
.doc-card .lang { color: var(--teal); font-weight: 600; font-size: .92rem; margin: .3rem 0; }
.doc-card .qual { color: var(--grey); font-size: .9rem; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th, td { padding: .9rem 1.2rem; text-align: left; border-bottom: 1px solid var(--line); }
thead th { background: var(--teal); color: #fff; font-weight: 600; }
tbody tr:last-child td { border-bottom: 0; }
.note { color: var(--grey); font-size: .9rem; margin-top: 1rem; text-align: center; }

/* ---------- Lists ---------- */
.svc-list { list-style: none; max-width: 640px; margin: 0 auto; display: grid; gap: .75rem; }
.svc-list li { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--teal); border-radius: 10px; padding: .9rem 1.2rem; }

.info-block { max-width: 760px; margin: 0 auto; text-align: center; }
.info-block + .info-block { margin-top: 2.5rem; }
.info-block h3 { color: var(--teal); margin-bottom: .6rem; }

/* ---------- Forms ---------- */
.form-wrap { max-width: 720px; margin: 0 auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 2.5rem; box-shadow: var(--shadow); }
.form-grid { display: grid; gap: 1.3rem; grid-template-columns: 1fr 1fr; }
.field { display: flex; flex-direction: column; gap: .4rem; }
.field.full { grid-column: 1 / -1; }
.field label { font-weight: 600; font-size: .95rem; }
.field label .req, .field .req { color: #DC2626; font-weight: 700; }
input, select, textarea {
  font-family: inherit; font-size: 1rem; padding: .7rem .85rem;
  border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px var(--teal-light); }
textarea { resize: vertical; min-height: 90px; }

.fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; margin-bottom: 1.8rem; }
.fieldset legend { font-weight: 700; color: var(--teal); padding: 0 .5rem; font-size: 1.05rem; }

.checks { display: grid; grid-template-columns: repeat(2, 1fr); gap: .6rem; }
.check { display: flex; align-items: center; gap: .5rem; }
.check input { width: auto; }

.privacy { background: var(--warm); border-radius: 10px; padding: 1.2rem 1.4rem; font-size: .9rem; color: var(--grey); margin: 1.5rem 0; }
.privacy strong { color: var(--ink); display: block; margin-bottom: .3rem; }

.form-actions { text-align: center; margin-top: 1.5rem; }

.disclaimer { background: #FEF3C7; border: 1px solid #FCD34D; color: #92400E; border-radius: 10px; padding: 1rem 1.2rem; font-size: .9rem; max-width: 720px; margin: 0 auto 1.8rem; }

.success-msg {
  display: none; max-width: 720px; margin: 0 auto;
  background: var(--teal-light); border: 1px solid var(--teal);
  color: var(--teal-dark); border-radius: var(--radius); padding: 1.5rem; text-align: center; font-weight: 600;
}
.success-msg.show { display: block; }

/* ---------- Map ---------- */
.map-embed { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.map-embed iframe { width: 100%; height: 380px; border: 0; display: block; }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: #D1D5DB; padding: 3rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-bottom: 2rem; }
.footer h4 { color: #fff; margin-bottom: .6rem; font-size: .95rem; text-transform: uppercase; letter-spacing: .05em; }
.footer a { color: #9CA3AF; }
.footer a:hover { color: var(--teal-light); }
.footer-bottom { border-top: 1px solid #374151; padding-top: 1.2rem; text-align: center; font-size: .85rem; color: #9CA3AF; }

.page-head { background: var(--warm); padding: 3rem 0; text-align: center; }
.page-head h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .checks { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav-menu {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; background: #fff; border-bottom: 1px solid var(--line);
    padding: 1rem 6%; gap: 1rem; display: none;
  }
  .nav-menu.open { display: flex; }
}