/* 青藤雲 VineClinic Design System */
:root {
  --color-primary: #0d9488;
  --color-primary-dark: #115e59;
  --color-primary-light: #ccfbf1;
  --color-accent: #f59e0b;
  --color-accent-soft: #fef3c7;
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-surface-alt: #f5f5f4;
  --color-ink: #1c1917;
  --color-ink-soft: #57534e;
  --color-ink-muted: #a8a29e;
  --color-border: #e7e5e4;
  --color-success: #059669;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --shadow-soft: 0 1px 2px rgba(28,25,23,.04), 0 4px 16px rgba(28,25,23,.04);
  --shadow-card: 0 1px 3px rgba(28,25,23,.06), 0 12px 32px -8px rgba(28,25,23,.08);
  --shadow-glow: 0 0 0 4px rgba(13,148,136,.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --font-zh: 'Noto Sans TC', 'PingFang TC', system-ui, sans-serif;
  --font-en: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-zh);
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  font-feature-settings: "palt";
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

/* Typography */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
}

.eyebrow.warm {
  background: var(--color-accent-soft);
  color: #92400e;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; margin: 0; letter-spacing: -.01em; }
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }
p { color: var(--color-ink-soft); margin: 0; }
.lede { font-size: 1.125rem; color: var(--color-ink-soft); max-width: 56ch; }

/* Layout */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }
.section-tight { padding: 56px 0; }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  background: rgba(255,255,255,.78);
  border-bottom: 1px solid rgba(231, 229, 228, .6);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -.01em;
}
.brand-mark {
  width: 32px; height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #14b8a6, #0d9488 60%, #115e59);
  display: grid; place-items: center;
  color: white; font-weight: 800; font-size: 16px;
  box-shadow: 0 4px 14px -2px rgba(13,148,136,.4);
}
.nav-links {
  display: flex; gap: 28px; align-items: center;
}
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--color-ink-soft);
  transition: color .15s;
}
.nav-links a:hover { color: var(--color-primary-dark); }

.nav-cta { display: flex; gap: 12px; align-items: center; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .18s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 6px 20px -4px rgba(13,148,136,.5);
}
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border);
}
.btn-ghost:hover { background: var(--color-surface-alt); }
.btn-line {
  background: #06c755;
  color: white;
  box-shadow: 0 6px 20px -4px rgba(6,199,85,.4);
}
.btn-line:hover { background: #05a648; }
.btn-lg { padding: 14px 28px; font-size: 15px; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* Hero */
.hero {
  position: relative;
  padding: 96px 0 120px;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 70% 10%, rgba(20,184,166,.12), transparent 70%),
              radial-gradient(ellipse 60% 50% at 10% 90%, rgba(245,158,11,.08), transparent 70%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
}
.hero-visual {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  aspect-ratio: 5/4;
  background: linear-gradient(135deg, #f0fdfa, #e2e8f0);
  box-shadow: var(--shadow-card);
}

@media (max-width: 880px) {
  .hero { padding: 56px 0 80px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* Card */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-soft);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.card-flat { box-shadow: none; }
.card h3 { margin-bottom: 8px; }
.card p { font-size: .95rem; }

.icon-square {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: grid; place-items: center;
  margin-bottom: 14px;
}
.icon-square.warm { background: var(--color-accent-soft); color: #b45309; }
.icon-square.blue { background: #dbeafe; color: #1d4ed8; }
.icon-square.pink { background: #fce7f3; color: #be185d; }

/* Stat */
.stat {
  padding: 28px 24px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}
.stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  font-family: var(--font-en);
  letter-spacing: -.02em;
}
.stat-label { font-size: .9rem; color: var(--color-ink-soft); margin-top: 6px; }

/* Tag */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
}
.tag-green { background: var(--color-primary-light); color: var(--color-primary-dark); }
.tag-amber { background: var(--color-accent-soft); color: #92400e; }
.tag-blue { background: #dbeafe; color: #1d4ed8; }
.tag-red { background: #fee2e2; color: #b91c1c; }
.tag-gray { background: var(--color-surface-alt); color: var(--color-ink-soft); }

/* Footer */
.footer {
  background: #0f1a18;
  color: #a8a29e;
  padding: 56px 0 40px;
}
.footer h4 { color: white; font-size: 14px; margin-bottom: 16px; font-weight: 600; }
.footer a { display: block; padding: 4px 0; font-size: 14px; color: #a8a29e; }
.footer a:hover { color: white; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}
.footer-bottom {
  border-top: 1px solid #292524;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}
@media (max-width: 880px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Tabs / pills */
.pill-tabs {
  display: inline-flex;
  background: var(--color-surface-alt);
  padding: 4px;
  border-radius: var(--radius-pill);
}
.pill-tabs button {
  padding: 8px 18px;
  border: none;
  background: transparent;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 13px;
  color: var(--color-ink-soft);
  cursor: pointer;
}
.pill-tabs button.active {
  background: white;
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-soft);
}

/* Form */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 600; color: var(--color-ink); }
.field input,
.field select,
.field textarea {
  font: inherit;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: white;
  color: var(--color-ink);
  transition: border-color .15s, box-shadow .15s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}
.field-hint { font-size: 12px; color: var(--color-ink-muted); }

/* Tables */
.table { width: 100%; border-collapse: collapse; background: white; border-radius: var(--radius-lg); overflow: hidden; }
.table th, .table td { padding: 14px 18px; text-align: left; font-size: 14px; }
.table thead { background: var(--color-surface-alt); }
.table th { font-weight: 600; color: var(--color-ink-soft); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; }
.table tbody tr { border-top: 1px solid var(--color-border); }
.table tbody tr:hover { background: rgba(13,148,136,.04); }

/* Image placeholder visual */
.img-placeholder {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #d1fae5 0%, #ccfbf1 50%, #fef3c7 100%);
  overflow: hidden;
  display: grid;
  place-items: center;
  color: var(--color-primary-dark);
}
.img-placeholder::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 22% 28%, rgba(255,255,255,.7), transparent 40%),
    radial-gradient(circle at 78% 72%, rgba(245,158,11,.18), transparent 50%);
}
.img-placeholder-label {
  position: relative;
  font-size: 13px;
  font-weight: 600;
  background: rgba(255,255,255,.85);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  letter-spacing: .02em;
  color: var(--color-ink-soft);
}

/* Admin layout */
.admin-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.admin-sidebar {
  background: #0f1a18;
  color: #a8a29e;
  padding: 24px 18px;
}
.admin-sidebar .brand { color: white; margin-bottom: 28px; }
.admin-sidebar a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 14px;
  color: #a8a29e;
  font-weight: 500;
}
.admin-sidebar a:hover { background: #1c2825; color: white; }
.admin-sidebar a.active { background: rgba(20,184,166,.18); color: #5eead4; }
.admin-section-label {
  font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase;
  color: #525252;
  padding: 16px 12px 6px;
}
.admin-main { background: var(--color-bg); padding: 28px 36px; }
.admin-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 28px;
}
.admin-header h1 { font-size: 1.6rem; }
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 28px;
}
@media (max-width: 1000px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 880px) { .admin-shell { grid-template-columns: 1fr; } .admin-sidebar { display: none; } }

/* Queue / Progress */
.queue-card {
  background: white; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: 22px; display: flex; flex-direction: column; gap: 12px;
}
.queue-now {
  font-size: 4rem; font-weight: 800; color: var(--color-primary-dark);
  font-family: var(--font-en); letter-spacing: -.04em; line-height: 1;
}
.queue-pulse {
  width: 10px; height: 10px;
  border-radius: 50%; background: #10b981;
  box-shadow: 0 0 0 0 rgba(16,185,129,.6);
  animation: pulse 1.6s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16,185,129,.5); }
  70% { box-shadow: 0 0 0 12px rgba(16,185,129,0); }
  100% { box-shadow: 0 0 0 0 rgba(16,185,129,0); }
}

/* Pricing */
.price-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
@media (max-width: 1000px) { .price-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .price-grid { grid-template-columns: 1fr; } }
.price-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex; flex-direction: column; gap: 14px;
  position: relative;
}
.price-card.featured {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, white, #f0fdfa);
  box-shadow: 0 20px 50px -20px rgba(13,148,136,.35);
  transform: scale(1.02);
}
.price-card .price-num { font-size: 2.2rem; font-weight: 800; color: var(--color-ink); font-family: var(--font-en); letter-spacing: -.02em; }
.price-card .price-num small { font-size: .9rem; font-weight: 500; color: var(--color-ink-soft); }
.price-card ul { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-direction: column; gap: 8px; }
.price-card ul li { font-size: 14px; color: var(--color-ink-soft); display: flex; gap: 8px; }
.price-card ul li::before { content: '✓'; color: var(--color-primary); font-weight: 700; }
.price-card .featured-flag {
  position: absolute; top: -10px; right: 18px;
  background: var(--color-primary);
  color: white;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
}

/* Timeline / steps */
.steps { display: grid; gap: 18px; }
.step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  align-items: start;
}
.step-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: grid; place-items: center;
  font-weight: 700;
  font-family: var(--font-en);
}

/* LINE depth */
.depth-card {
  border-left: 4px solid var(--color-primary);
  padding: 18px 22px;
  background: white;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-soft);
}
.depth-card.t1 { border-left-color: #94a3b8; }
.depth-card.t2 { border-left-color: var(--color-primary); }
.depth-card.t3 { border-left-color: var(--color-accent); }

/* Utilities */
.muted { color: var(--color-ink-soft); }
.bold { font-weight: 700; }
.mono { font-family: var(--font-en); font-variant-numeric: tabular-nums; }
.center { text-align: center; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }
.gap-lg { gap: 24px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.between { display: flex; justify-content: space-between; align-items: center; }
.mt-sm { margin-top: 8px; } .mt-md { margin-top: 16px; } .mt-lg { margin-top: 32px; }
.mb-sm { margin-bottom: 8px; } .mb-md { margin-bottom: 16px; } .mb-lg { margin-bottom: 32px; }
.hide-mobile { display: initial; }
@media (max-width: 880px) {
  .hide-mobile { display: none !important; }
  .section { padding: 56px 0; }
  .nav-links { display: none; }
}

/* Patient progress board */
.board-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}
@media (max-width: 880px) { .board-grid { grid-template-columns: 1fr; } }

.waiting-list {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
}
.waiting-list h3 { padding: 18px 22px 6px; }
.waiting-row {
  padding: 12px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  font-size: 14px;
}
.waiting-row.you {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
}
.waiting-row.done { color: var(--color-ink-muted); }
.waiting-row .num { font-family: var(--font-en); font-weight: 700; font-size: 16px; min-width: 44px; }

/* Doctor card */
.doc-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}
.doc-photo {
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, #ccfbf1, #fef3c7);
  position: relative;
}
.doc-body { padding: 18px 20px 22px; }
.doc-body h3 { margin-bottom: 4px; }
.doc-meta { font-size: 13px; color: var(--color-ink-soft); }

/* ============================================
   Responsive breakpoints
   - Mobile:  <= 640px
   - Tablet:  641-960px
   - Desktop: 961-1440px
   - Wide:    1441px+
   ============================================ */

/* Wide screens — cap content width and bump scale */
@media (min-width: 1441px) {
  .wrap { max-width: 1280px; }
  h1 { font-size: clamp(2.6rem, 3.2vw, 4rem); }
  .hero { padding: 120px 0 140px; }
}

/* Tablet — adjust nav, hero, admin shell */
@media (max-width: 1100px) {
  .nav-links { gap: 18px; }
  .nav-links a { font-size: 13px; }
  .hero-grid { gap: 36px; grid-template-columns: 1.1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
  .grid-4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
  .admin-shell { grid-template-columns: 200px 1fr; }
  .admin-sidebar { padding: 18px 12px; font-size: 13px; }
  .admin-main { padding: 22px 24px; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: repeat(2, 1fr); }
  .price-card.featured { transform: none; }
}

/* Hamburger mobile menu */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  width: 40px; height: 40px;
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { display: block; }

/* Mobile — collapse nav, single column, condense KPIs */
@media (max-width: 880px) {
  .section { padding: 56px 0; }
  .wrap, .wrap-narrow { padding: 0 18px; }

  .nav-inner { padding: 12px 18px; gap: 10px; }
  .brand-text { font-size: 16px; }
  .brand-mark { width: 30px; height: 30px; font-size: 14px; }
  .nav-cta .btn { padding: 8px 14px; font-size: 13px; }
  .hide-mobile { display: none !important; }

  /* Mobile nav drawer */
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    gap: 0;
    padding: 8px 14px 18px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 14px 30px -10px rgba(28,25,23,.18);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 12px 8px;
    border-bottom: 1px solid var(--color-surface-alt);
    font-size: 15px;
    width: 100%;
  }
  .nav-links a:last-child { border-bottom: none; }

  /* Hero */
  .hero { padding: 48px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-visual { aspect-ratio: 4/3; border-radius: 18px; }
  .hero-overlay {
    left: 14px !important;
    right: 14px !important;
    bottom: 14px !important;
    gap: 8px !important;
  }
  h1 { font-size: clamp(1.8rem, 8vw, 2.5rem); }
  .lede { font-size: 1rem; }

  /* Reduce padding inside cards */
  .card { padding: 22px 20px; border-radius: 18px; }
  .stat { padding: 20px 18px; border-radius: 16px; }
  .stat-num { font-size: 1.8rem; }
  .icon-square { width: 38px; height: 38px; margin-bottom: 10px; }

  /* Grids collapse */
  .grid-2, .grid-3, .grid-4, .price-grid, .kpi-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .grid { gap: 16px; }

  /* Buttons & tags */
  .btn-lg { padding: 12px 22px; font-size: 14px; }
  .flex.gap-md { gap: 10px; }

  /* Tables — horizontal scroll fallback */
  .table { font-size: 13px; }
  .table th, .table td { padding: 10px 12px; }

  /* Demo hero overlay shrink */
  .hero-overlay strong { font-size: 11px; }
  .hero-overlay .tag { font-size: 9px; padding: 2px 6px; }

  /* Doctor card */
  .doc-photo { aspect-ratio: 1/1; }

  /* Footer */
  .footer { padding: 40px 0 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; margin-bottom: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; font-size: 12px; }

  /* Section eyebrow padding */
  .eyebrow { font-size: 12px; padding: 5px 12px; }

  /* Reduce big-display numbers on phone */
  .queue-now { font-size: 3rem; }
}

/* Very small phones (iPhone SE / 360px) */
@media (max-width: 380px) {
  h1 { font-size: 1.7rem; line-height: 1.18; }
  h2 { font-size: 1.4rem; }
  .lede { font-size: .95rem; }
  .btn { padding: 10px 16px; font-size: 13px; }
  .btn-lg { padding: 12px 20px; font-size: 13px; }
  .stat-num { font-size: 1.5rem; }
  .nav-cta .btn { padding: 7px 12px; font-size: 12px; }
}

/* Print friendliness */
@media print {
  .nav, .footer, .hero-overlay, .nav-toggle { display: none !important; }
  body { background: white; }
  .section { padding: 24px 0; page-break-inside: avoid; }
  .card { box-shadow: none; border: 1px solid #ddd; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* Touch device — disable hover scale on cards */
@media (hover: none) {
  .card:hover { transform: none; box-shadow: var(--shadow-soft); }
  .btn-primary:hover { transform: none; }
}