/* ====== Tappurian Design Tokens ====== */
/* Warm, traditional Japanese wagashi-inspired palette */

:root {
  /* === Color Themes (toggleable via Tweaks) === */
  /* こしあん (default) — deep azuki red */
  --t-bg: #FBF4E8;          /* warm cream paper */
  --t-bg-soft: #F5E9D3;      /* aged washi */
  --t-bg-warm: #EDD9B6;      /* deeper kraft */
  --t-ink: #2A1810;          /* sumi black-brown */
  --t-ink-soft: #5A4030;     /* secondary brown */
  --t-accent: #9B2C2C;       /* azuki red — primary */
  --t-accent-deep: #6B1818;  /* dark azuki */
  --t-accent-soft: #C8503A;  /* lighter red */
  --t-gold: #C9A04A;         /* aged gold */
  --t-gold-soft: #E8B547;
  --t-cream: #FFF8EC;
  --t-line: #C9B69A;         /* divider */
  --t-tatami: #B8A77A;
  --t-anko: #5C2620;         /* anko paste deep */
  --t-kawa: #D4A055;         /* taiyaki crust */
  --t-kawa-deep: #8B5A2B;

  /* Spacing scale */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;
  --sp-10: 128px;

  /* Density (toggleable) */
  --density-scale: 1;

  /* Type */
  --font-mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-gothic: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-hand: "Yuji Syuku", "Klee One", "Hiragino Mincho ProN", serif;
  --font-display: var(--font-mincho);
  --font-body: var(--font-gothic);

  /* Type scale */
  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-base: 16px;
  --fs-md: 18px;
  --fs-lg: 22px;
  --fs-xl: 28px;
  --fs-2xl: 36px;
  --fs-3xl: 48px;
  --fs-4xl: 64px;
  --fs-5xl: 88px;
  --fs-6xl: 120px;

  /* Radius */
  --r-sm: 4px;
  --r-md: 10px;
  --r-lg: 18px;
  --r-xl: 28px;
  --r-pill: 999px;

  /* Shadows — soft & warm */
  --sh-sm: 0 1px 2px rgba(60, 30, 15, 0.08);
  --sh-md: 0 4px 16px rgba(60, 30, 15, 0.10);
  --sh-lg: 0 12px 40px rgba(60, 30, 15, 0.14);
  --sh-warm: 0 8px 32px rgba(155, 44, 44, 0.18);
}

/* === Theme: kuriann (chestnut) === */
[data-theme="kuriann"] {
  --t-accent: #8B4513;
  --t-accent-deep: #5C2D0C;
  --t-accent-soft: #B07043;
  --t-anko: #6B3410;
}
/* === Theme: matcha === */
[data-theme="matcha"] {
  --t-accent: #4A6B3A;
  --t-accent-deep: #2D4423;
  --t-accent-soft: #7A9560;
  --t-anko: #3A5028;
  --t-bg: #F4F0E0;
  --t-bg-soft: #E8E2C8;
}

/* === Density === */
[data-density="compact"] {
  --density-scale: 0.78;
}

/* === Font swap === */
[data-fontset="gothic"] {
  --font-display: var(--font-gothic);
  --font-body: var(--font-gothic);
}
[data-fontset="hand"] {
  --font-display: var(--font-hand);
  --font-body: var(--font-mincho);
}

/* === Base reset === */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-feature-settings: "palt" 1;
  color: var(--t-ink);
  background: var(--t-bg);
  line-height: 1.7;
  letter-spacing: 0.02em;
}

/* Paper texture overlay (subtle) */
.paper-texture {
  position: relative;
}
.paper-texture::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(139, 90, 43, 0.04) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(139, 90, 43, 0.04) 0, transparent 40%);
  mix-blend-mode: multiply;
}

/* Vertical writing helper */
.tategaki {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-feature-settings: "vert" 1, "palt" 1;
}

/* Stamp / hanko style */
.hanko {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--t-accent);
  color: var(--t-cream);
  font-family: var(--font-mincho);
  font-weight: 700;
  border-radius: 6px;
  transform: rotate(-4deg);
  box-shadow: 0 0 0 2px var(--t-accent-deep) inset, 0 0 0 4px var(--t-accent) inset;
  line-height: 1;
}

/* Brush stroke underline */
.brush-under {
  background-image: linear-gradient(transparent 60%, rgba(155, 44, 44, 0.25) 60%, rgba(155, 44, 44, 0.25) 92%, transparent 92%);
  background-repeat: no-repeat;
  padding: 0 0.1em;
}

/* Common primitives */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--t-accent);
  color: var(--t-cream);
  border: none;
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 600;
  border-radius: var(--r-pill);
  cursor: pointer;
  text-decoration: none;
  transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
  box-shadow: var(--sh-warm);
}
.btn:hover { background: var(--t-accent-deep); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(155,44,44,0.30); }
.btn-ghost {
  background: transparent;
  color: var(--t-accent);
  border: 1.5px solid var(--t-accent);
  box-shadow: none;
}
.btn-ghost:hover { background: var(--t-accent); color: var(--t-cream); }

/* Section eyebrow */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  letter-spacing: 0.3em;
  color: var(--t-accent);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--t-accent);
}

/* Section title */
.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 700;
  line-height: 1.2;
  margin: 12px 0 16px;
  letter-spacing: 0.02em;
  color: var(--t-ink);
}

/* Reveal-on-scroll baseline */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--t-bg-soft); }
::-webkit-scrollbar-thumb { background: var(--t-line); border-radius: 5px; }