/* ============================================================
   Hair by Petal — "Petal on Paper"
   Base + component styles, built entirely on tokens.css.
   Load AFTER tokens.css.

   No web fonts, no CDN, no external requests. System fonts only
   so WeChat's X5/webview renders instantly with nothing to
   download.
   ============================================================ */

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;   /* stop WeChat/iOS auto-inflating type */
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-latin);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Safe-area for notch / home indicator when shared full-bleed */
  padding: env(safe-area-inset-top) env(safe-area-inset-right)
           env(safe-area-inset-bottom) env(safe-area-inset-left);
}

img, svg { max-width: 100%; height: auto; display: block; }

a { color: var(--brand-strong); text-underline-offset: 3px; }
a:hover { color: var(--emerald-900); }

h1, h2, h3 { margin: 0; text-wrap: balance; }

:lang(zh-CN) { letter-spacing: var(--ls-cjk); }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: var(--container-wide); }

.section { padding-block: var(--sp-8); }
.section--tint { background: var(--bg-alt); }
.section--sink { background: var(--paper-sink); }

.stack > * + * { margin-top: var(--sp-4); }   /* vertical rhythm helper */

/* ---------- Kicker / eyebrow ---------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-latin);
  font-size: var(--fs-kicker);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-kicker);
  text-transform: uppercase;
  color: var(--brand-strong);
}
.kicker::before {                      /* small emerald leaf tick */
  content: "";
  width: 18px; height: 2px;
  background: var(--emerald-300);
  border-radius: var(--radius-pill);
}

/* ============================================================
   BILINGUAL PRIMITIVE  —  Mandarin leads, English companions.
   .bi stacks the two: Chinese first + larger, English beneath +
   smaller + muted. Tag the language on the SPANS, always.
   ============================================================ */
.bi { display: flex; flex-direction: column; gap: var(--sp-1); }

.bi .zh {
  font-family: var(--font-cjk);
  line-height: var(--lh-cjk);
  color: var(--text);
}
.bi .en {
  font-family: var(--font-latin);
  font-size: var(--fs-companion);
  line-height: var(--lh-latin);
  color: var(--text-2);
}

/* Heading-scale bilingual lockups */
.bi--hero .zh {
  font-size: var(--fs-display);
  line-height: var(--lh-cjk-display);
  font-weight: var(--fw-bold);
}
.bi--hero .en {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  letter-spacing: 0.02em;
  color: var(--brand-strong);
}
.bi--h2 { gap: var(--sp-2); }
.bi--h2 .zh { font-size: var(--fs-h2); font-weight: var(--fw-semibold); }
.bi--h2 .en {
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-kicker);
  text-transform: uppercase;
  color: var(--text-3);
}
.bi--h3 .zh { font-size: var(--fs-h3); font-weight: var(--fw-semibold); }

/* Inline bilingual (side-by-side) for tight labels: 中文 / EN */
.bi-inline { display: inline-flex; align-items: baseline; gap: var(--sp-2); }
.bi-inline .zh { font-family: var(--font-cjk); }
.bi-inline .en { font-family: var(--font-latin); font-size: var(--fs-companion); color: var(--text-2); }

/* ---------- Buttons (tap targets >= 48px) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: var(--tap-comfy);
  padding: 0 var(--sp-5);
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease),
              background var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--primary { background: var(--brand); color: var(--on-brand); }
.btn--primary:hover { background: var(--brand-strong); color: var(--on-brand); }

.btn--secondary {
  background: var(--surface-1);
  color: var(--brand-strong);
  border-color: var(--emerald-300);
}
.btn--secondary:hover { background: var(--brand-tint); }

.btn--ghost { background: transparent; color: var(--brand-strong); }
.btn--ghost:hover { background: var(--brand-tint); }

.btn--block { width: 100%; }
.btn .icon { width: 20px; height: 20px; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  box-shadow: var(--shadow-card);
}

/* ---------- Services / price list ---------- */
.services { display: flex; flex-direction: column; gap: var(--sp-2); }

.service {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: var(--sp-4);
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--border);
}
.service:last-child { border-bottom: 0; }

.service__name { display: flex; flex-direction: column; gap: 2px; }
.service__name .zh {
  font-family: var(--font-cjk);
  font-size: var(--fs-body-lg);
  font-weight: var(--fw-semibold);
  line-height: 1.4;
}
.service__name .en {
  font-family: var(--font-latin);
  font-size: var(--fs-companion);
  color: var(--text-2);
}
.service__price {
  font-family: var(--font-latin);
  font-size: var(--fs-body-lg);
  font-weight: var(--fw-semibold);
  color: var(--brand-strong);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.service__price small { font-size: var(--fs-caption); color: var(--text-3); font-weight: var(--fw-regular); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  min-height: 60px;
}
.brand { display: inline-flex; align-items: center; gap: var(--sp-2); text-decoration: none; color: var(--text); }
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand__name { font-weight: var(--fw-bold); font-size: 18px; letter-spacing: 0.01em; }
.brand__name small { display: block; font-family: var(--font-cjk); font-size: 12px; font-weight: var(--fw-medium); color: var(--text-2); letter-spacing: 0; }

/* ---------- Language toggle (segmented) ---------- */
.lang-toggle {
  display: inline-flex;
  padding: 3px;
  background: var(--paper-sink);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
}
.lang-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  min-height: 38px;
  padding: 0 var(--sp-4);
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  color: var(--text-2);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.lang-toggle button[aria-pressed="true"] { background: var(--brand); color: var(--on-brand); }

/* Long-form prose visibility, driven by [data-lang] on <html>.
   Short labels stay bilingual always; only .lf-* blocks switch. */
.lf-en { display: none; }                          /* default: Mandarin-first */
html[data-lang="en"] .lf-zh { display: none; }
html[data-lang="en"] .lf-en { display: block; }
html[data-lang="zh"] .lf-zh { display: block; }
html[data-lang="zh"] .lf-en { display: none; }

/* ---------- Media / photo wells ---------- */
.media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper-sink);
  border: 1px solid var(--border);
}
.media > * { width: 100%; height: 100%; object-fit: cover; }
.media--portrait { aspect-ratio: 4 / 5; }
.media--wide { aspect-ratio: 16 / 10; }

/* ---------- Location / hours ---------- */
.info-row {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: var(--sp-3);
  align-items: start;
  padding-block: var(--sp-3);
}
.info-row .icon { width: 24px; height: 24px; color: var(--brand); margin-top: 2px; }
.info-row + .info-row { border-top: 1px solid var(--border); }

.hours { list-style: none; margin: 0; padding: 0; }
.hours li {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-2) 0;
  font-variant-numeric: tabular-nums;
}
.hours li + li { border-top: 1px dashed var(--border); }
.hours .day { color: var(--text-2); }
.hours .day .en { font-size: var(--fs-caption); color: var(--text-3); margin-left: var(--sp-2); }
.hours [data-closed] .time { color: var(--text-3); }

/* ---------- WeChat card ---------- */
.wechat {
  display: flex;
  gap: var(--sp-5);
  align-items: center;
  flex-wrap: wrap;
}
.wechat__qr {
  width: 132px; height: 132px; flex: none;
  padding: var(--sp-3);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.wechat__meta { flex: 1 1 200px; }
.wechat__id {
  font-family: var(--font-latin);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-body-lg);
  color: var(--brand-strong);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--emerald-900);
  color: color-mix(in srgb, #ffffff 82%, transparent);
  padding-block: var(--sp-7);
  padding-bottom: calc(var(--sp-7) + env(safe-area-inset-bottom));
}
.site-footer a { color: #ffffff; }
.site-footer .zh { font-family: var(--font-cjk); }
.site-footer .muted { color: color-mix(in srgb, #ffffff 60%, transparent); font-size: var(--fs-caption); }

/* ---------- Floral motif helper ---------- */
.petal-mark { color: var(--accent); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--petal-100);
  color: var(--petal-700);
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
}
.badge--emerald { background: var(--brand-tint); color: var(--brand-strong); }

/* ---------- Focus states (visible, keyboard) ---------- */
:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

/* ---------- Responsive: bump up at >=768px ---------- */
@media (min-width: 768px) {
  .section { padding-block: var(--sp-9); }
  .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-7); align-items: center; }
  .hero__actions { flex-direction: row; }
}