/* ============================================================
   shared.css — design tokens, reset, base, layout wrapper
   Link this from every page on the site.
   ============================================================ */

:root {
  /* ── Typography ── */
  --font-sans: "Noto Sans TC", sans-serif;
  --font-serif: "Cormorant Garamond", serif;

  /* Type scale — pairs with the existing calc(px * --font-scale) idiom */
  --fs-2xs: calc(9px * var(--font-scale));
  --fs-xs: calc(10px * var(--font-scale));
  --fs-sm: calc(11px * var(--font-scale));
  --fs-base: calc(13px * var(--font-scale));
  --fs-md: calc(15px * var(--font-scale));
  --fs-lg: calc(18px * var(--font-scale));
  --fs-xl: calc(24px * var(--font-scale));
  --fs-2xl: calc(32px * var(--font-scale));
  --fs-3xl: calc(48px * var(--font-scale));

  /* Tracking steps used across eyebrows / labels / body copy */
  --ls-sm: 0.06em;
  --ls-md: 0.12em;
  --ls-lg: 0.18em;
  --ls-xl: 0.25em;

  /* ── Color ── */
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #888;
  --color-text-muted: #6b6660;
  --color-text-faint: #a09890;
  --color-background-primary: #fff;
  --color-background-secondary: #f7f7f5;
  --color-surface-dark: #0a0a0a;
  --color-border-tertiary: #e5e5e5;
  --color-border-warm: #d8d2ca;
  --color-border-warm-md: #c8c0b8;
  --color-border-primary: #aaa;
  --border-radius-lg: 10px;
  --color-accent: #c9b47a;
  --color-header-gold: #b8a897;
  --color-accent-deep: #7c6a4e;
  --color-ink-hover: #4a4540;
  --color-line-green: #06c755;

  /* ── Spacing scale ── */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* ── Header height ── used by the #site-header spacer on every page */
  --header-height: 85px;

  /* ── Font scale ── change this to scale all text (1 = 100%, 1.1 = 110%) */
  --font-scale: 1.25;
  --m-font-scale: 1;

  /* ── Layout ── change these two to resize the whole site */
  --content-max-width: 1400px;
  --content-vw: 90vw;
  --content-width: min(var(--content-max-width), var(--content-vw));
  --content-pad: 1.5rem;
  --nav-align: max(var(--content-pad),
      calc((100vw - var(--content-width)) / 2 + var(--content-pad)));
}

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

html {
  touch-action: manipulation;
  overflow-x: clip;
  font-size: calc(16px * var(--font-scale));
}

a[href^="tel:"],
a[href^="tel:"]:visited {
  color: inherit;
}

@media (max-width: 768px) {
  :root { --header-height: 75px; }
  html { font-size: calc(8px * var(--m-font-scale)); }
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background: var(--color-background-primary);
  overflow-x: clip;
  padding: 0;
  margin: 0;
}

/* ── PAGE CONTENT wrapper (replaces body padding/max-width) ── */
.page-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--content-pad);
}

/* ── Shared hero layout (Products & Works pages) ── */
.hero {
  padding: 56px 0 32px;
  border-bottom: 0.5px solid var(--color-border-warm);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-right {
  text-align: left;
}

.hero-desc {
  font-size: calc(12px * var(--font-scale));
  color: var(--color-text-muted);
  letter-spacing: var(--ls-sm);
  line-height: 2;
  max-width: 360px;
}

/* ── Shared hero typography (Products & Works pages) ── */
.hero-zh {
  font-family: var(--font-serif);
  font-size: var(--fs-3xl);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: 0.02em;
}

.hero-en {
  font-family: var(--font-serif);
  font-size: var(--fs-sm);
  letter-spacing: 0.24em;
  color: var(--color-text-faint);
  margin-top: var(--space-xs);
}

/* ── Page-entry fade (home / about / location apply it on body,
      gated per page by prefers-reduced-motion where designed) ── */
@keyframes pageEnter {
  from {
    opacity: 0;
    background-color: #000;
  }

  to {
    opacity: 1;
  }
}

/* ── Shared button styles ── */
.btn-dark {
  padding: 13px 28px;
  background: var(--color-text-primary);
  color: var(--color-background-primary);
  border: none;
  font-family: var(--font-sans);
  font-size: var(--fs-2xs);
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
}

.btn-dark:hover {
  background: var(--color-ink-hover);
}

.btn-light {
  padding: 13px 28px;
  background: transparent;
  color: var(--color-text-primary);
  border: 0.5px solid var(--color-border-warm-md);
  font-family: var(--font-sans);
  font-size: var(--fs-2xs);
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
}

.btn-light:hover {
  background: var(--color-text-primary);
  color: var(--color-background-primary);
  border-color: var(--color-text-primary);
}