/* ============================================================
   Pawter — shared design system
   Themes, base, nav, footer, tweaks panel, reusable widgets
   ============================================================ */

/* ----- THEMES ----- */
:root,
body[data-theme="terracotta"] {
  --bg: #FBF7F1;
  --bg-2: #F4ECDF;
  --ink: #1F1A14;
  --ink-2: #5C5448;
  --line: #E6DCC9;
  --card: #FFFFFF;
  --accent: oklch(0.68 0.13 45);
  --accent-deep: oklch(0.55 0.14 45);
  --accent-soft: oklch(0.94 0.04 45);
  --secondary: oklch(0.78 0.05 145);
  --secondary-soft: oklch(0.94 0.03 145);
  --butter: oklch(0.92 0.08 90);
  --butter-soft: oklch(0.96 0.04 90);
  --dark-bg: #1F1A14;
  --dark-fg: #FBF7F1;
  --dark-fg-2: #C9BFAC;
  --dark-fg-3: #ABA293;
  --dark-line: rgba(255,255,255,.12);
  --dark-accent-fg: var(--butter);
}
body[data-theme="forest"] {
  --bg: #F3F0E5;
  --bg-2: #E5E1D2;
  --ink: #1A2118;
  --ink-2: #5A6253;
  --line: #DAD4BF;
  --card: #FBF8EF;
  --accent: oklch(0.5 0.09 155);
  --accent-deep: oklch(0.4 0.1 155);
  --accent-soft: oklch(0.92 0.04 155);
  --secondary: oklch(0.72 0.08 60);
  --secondary-soft: oklch(0.94 0.04 60);
  --butter: oklch(0.88 0.1 95);
  --butter-soft: oklch(0.95 0.05 95);
  --dark-bg: #1A2118;
  --dark-fg: #F3F0E5;
  --dark-fg-2: #BFBBA8;
  --dark-fg-3: #9A9684;
  --dark-line: rgba(255,255,255,.12);
  --dark-accent-fg: var(--butter);
}
body[data-theme="berry"] {
  --bg: #FDF6F4;
  --bg-2: #F7E7E5;
  --ink: #2A1820;
  --ink-2: #6E4F5C;
  --line: #ECD4D2;
  --card: #FFFFFF;
  --accent: oklch(0.62 0.16 350);
  --accent-deep: oklch(0.48 0.17 350);
  --accent-soft: oklch(0.94 0.05 350);
  --secondary: oklch(0.78 0.08 30);
  --secondary-soft: oklch(0.95 0.04 30);
  --butter: oklch(0.92 0.08 60);
  --butter-soft: oklch(0.96 0.04 60);
  --dark-bg: #2A1820;
  --dark-fg: #FDF6F4;
  --dark-fg-2: #D2BCC4;
  --dark-fg-3: #A89AA1;
  --dark-line: rgba(255,255,255,.14);
  --dark-accent-fg: var(--butter);
}
body[data-theme="ocean"] {
  --bg: #F1F4F6;
  --bg-2: #E1E8EC;
  --ink: #0F1F26;
  --ink-2: #4A6068;
  --line: #D2DCE1;
  --card: #FFFFFF;
  --accent: oklch(0.55 0.12 230);
  --accent-deep: oklch(0.42 0.13 230);
  --accent-soft: oklch(0.94 0.03 230);
  --secondary: oklch(0.78 0.07 195);
  --secondary-soft: oklch(0.94 0.03 195);
  --butter: oklch(0.88 0.09 85);
  --butter-soft: oklch(0.95 0.04 85);
  --dark-bg: #0F1F26;
  --dark-fg: #F1F4F6;
  --dark-fg-2: #BAC6CC;
  --dark-fg-3: #8C9AA1;
  --dark-line: rgba(255,255,255,.12);
  --dark-accent-fg: var(--butter);
}
body[data-theme="midnight"] {
  --bg: #14130F;
  --bg-2: #1E1C16;
  --ink: #F4ECDF;
  --ink-2: #ABA293;
  --line: #2D2A22;
  --card: #1E1C16;
  --accent: oklch(0.72 0.13 50);
  --accent-deep: oklch(0.62 0.14 50);
  --accent-soft: oklch(0.28 0.06 50);
  --secondary: oklch(0.7 0.06 145);
  --secondary-soft: oklch(0.28 0.04 145);
  --butter: oklch(0.85 0.1 85);
  --butter-soft: oklch(0.32 0.05 85);
  --dark-bg: #0A0907;
  --dark-fg: #F4ECDF;
  --dark-fg-2: #C9BFAC;
  --dark-fg-3: #9A9081;
  --dark-line: rgba(255,255,255,.12);
  --dark-accent-fg: var(--butter);
}
:root {
  --shadow-sm: 0 1px 2px rgba(31,26,20,.06), 0 1px 3px rgba(31,26,20,.04);
  --shadow-md: 0 4px 14px rgba(31,26,20,.06), 0 2px 4px rgba(31,26,20,.04);
  --shadow-lg: 0 20px 50px rgba(31,26,20,.10), 0 8px 16px rgba(31,26,20,.06);
  --radius: 14px;
}
body[data-theme="midnight"] {
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4), 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 14px rgba(0,0,0,.4), 0 2px 4px rgba(0,0,0,.3);
  --shadow-lg: 0 20px 50px rgba(0,0,0,.55), 0 8px 16px rgba(0,0,0,.35);
}

/* ----- BASE ----- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s, color .25s;
}
body[data-lang="ja"] { font-family: 'Noto Sans JP', 'Inter', system-ui, sans-serif; }
body[data-lang="ja"] .serif, body[data-lang="ja"] .logo-name,
body[data-lang="ja"] h1, body[data-lang="ja"] h2, body[data-lang="ja"] h4,
body[data-lang="ja"] blockquote, body[data-lang="ja"] .foot-tag,
body[data-lang="ja"] .trust-item .n, body[data-lang="ja"] .become-stat .n,
body[data-lang="ja"] .display { font-family: 'Noto Serif JP', 'Instrument Serif', serif; }
body[data-lang="zh"] { font-family: 'Noto Sans TC', 'Inter', system-ui, sans-serif; }
body[data-lang="zh"] .serif, body[data-lang="zh"] .logo-name,
body[data-lang="zh"] h1, body[data-lang="zh"] h2, body[data-lang="zh"] h4,
body[data-lang="zh"] blockquote, body[data-lang="zh"] .foot-tag,
body[data-lang="zh"] .trust-item .n, body[data-lang="zh"] .become-stat .n,
body[data-lang="zh"] .display { font-family: 'Noto Serif TC', 'Instrument Serif', serif; }
body[data-lang="zh"] h1, body[data-lang="zh"] .display { letter-spacing: 0; }
body[data-lang="zh"] h1 em, body[data-lang="zh"] h2 em, body[data-lang="zh"] .display em { font-style: normal; }
body[data-lang="ja"] h1 em, body[data-lang="ja"] h2 em, body[data-lang="ja"] .display em { font-style: normal; }

.serif, .display { font-family: 'Instrument Serif', serif; font-weight: 400; letter-spacing: -0.01em; }
.mono { font-family: 'JetBrains Mono', monospace; }

a { color: inherit; }
hr { border: none; border-top: 1px solid var(--line); margin: 0; }

/* ----- NAV ----- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg), transparent 15%);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 18px 32px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.logo-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--ink);
  display: grid; place-items: center;
  color: var(--bg);
}
.logo-mark svg { width: 22px; height: 22px; }
.logo-name { font-family: 'Instrument Serif', serif; font-size: 26px; letter-spacing: -.02em; }
.nav-links { display: flex; gap: 28px; font-size: 14px; }
.nav-links a { color: var(--ink-2); text-decoration: none; }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 500; }
.nav-right { display: flex; align-items: center; gap: 14px; }

/* ----- BUTTONS ----- */
.btn {
  border: 1px solid var(--line); background: transparent;
  padding: 9px 16px; border-radius: 999px;
  font-family: inherit; font-size: 14px; font-weight: 500; color: var(--ink);
  cursor: pointer; transition: all .15s;
  display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none;
}
.btn:hover { background: var(--bg-2); }
.btn-primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-primary:hover { filter: brightness(.9); }
.btn-accent { background: var(--accent); color: white; border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-deep); }
.btn-ghost { border-color: transparent; }
.btn-ghost:hover { background: var(--bg-2); }
.btn-lg { padding: 13px 22px; font-size: 15px; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { display: flex; width: 100%; justify-content: center; }

/* ----- EYEBROW ----- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-2);
  padding: 6px 12px; border-radius: 999px;
  background: var(--butter-soft);
  border: 1px solid color-mix(in oklab, var(--butter-soft), var(--ink) 8%);
}
body[data-theme="midnight"] .eyebrow { color: var(--butter); }
.eyebrow .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--accent); }
.eyebrow-quiet { background: var(--bg-2); border-color: var(--line); }

/* ----- CHIPS ----- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--ink-2);
  padding: 6px 12px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--line);
  cursor: pointer;
}
.chip:hover { background: var(--bg-2); }
.chip.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.chip .k { color: var(--ink); font-weight: 500; }

/* ----- TAG ----- */
.tag {
  font-size: 11px;
  padding: 3px 8px; border-radius: 999px;
  background: var(--bg-2); color: var(--ink-2);
  display: inline-flex; align-items: center; gap: 4px;
}
.tag-accent { background: var(--accent-soft); color: var(--accent-deep); }
.tag-secondary { background: var(--secondary-soft); color: var(--ink); }

/* ----- BADGE ----- */
.badge {
  background: color-mix(in oklab, var(--card), transparent 5%);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 11px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 5px;
  color: var(--ink);
}
.badge.now { background: var(--ink); color: var(--bg); }
.badge.now .pulse { width: 6px; height: 6px; background: var(--secondary); border-radius: 999px; }

/* ----- CARD ----- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* ----- AVATAR ----- */
.avatar-sm {
  width: 36px; height: 36px; border-radius: 999px;
  background:
    repeating-linear-gradient(135deg, var(--secondary) 0 6px,
      color-mix(in oklab, var(--secondary), var(--ink) 8%) 6px 7px);
  flex-shrink: 0;
}
.avatar-sm.t {
  background:
    repeating-linear-gradient(135deg, var(--accent) 0 6px,
      color-mix(in oklab, var(--accent), var(--ink) 8%) 6px 7px);
}
.avatar-sm.b {
  background:
    repeating-linear-gradient(135deg, var(--butter) 0 6px,
      color-mix(in oklab, var(--butter), var(--ink) 14%) 6px 7px);
}
.avatar-lg { width: 64px; height: 64px; border-radius: 999px; }
.avatar-xl { width: 120px; height: 120px; border-radius: 999px; }
.avatar-lg, .avatar-xl {
  background:
    repeating-linear-gradient(135deg, var(--secondary) 0 8px,
      color-mix(in oklab, var(--secondary), var(--ink) 8%) 8px 9px);
  flex-shrink: 0;
}
.avatar-lg.t, .avatar-xl.t {
  background:
    repeating-linear-gradient(135deg, var(--accent) 0 8px,
      color-mix(in oklab, var(--accent), var(--ink) 8%) 8px 9px);
}

/* ----- PLACEHOLDER (striped imagery slot) ----- */
.placeholder {
  width: 100%; height: 100%;
  background:
    repeating-linear-gradient(135deg, transparent 0 12px,
      color-mix(in oklab, var(--bg-2), var(--ink) 4%) 12px 13px);
  background-color: var(--bg-2);
  display: grid; place-items: center;
  color: var(--ink-2);
}
.placeholder-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: .04em;
  padding: 6px 10px; border-radius: 6px;
  background: var(--card); border: 1px solid var(--line);
  color: var(--ink-2);
}

/* ----- PULSE ----- */
.pulse {
  width: 8px; height: 8px; border-radius: 999px; background: var(--secondary);
  box-shadow: 0 0 0 0 color-mix(in oklab, var(--secondary), white 40%);
  animation: pulse 1.8s infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--secondary), transparent 0%); }
  70% { box-shadow: 0 0 0 10px color-mix(in oklab, var(--secondary), transparent 100%); }
  100% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--secondary), transparent 100%); }
}

/* ----- BLOCK / SECTION ----- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
section.block { max-width: 1280px; margin: 0 auto; padding: 72px 32px; }
.block-head { display: flex; align-items: end; justify-content: space-between; margin-bottom: 28px; gap: 24px; }
.block-head h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 44px; line-height: 1; margin: 0;
  letter-spacing: -.02em; font-weight: 400;
}
body[data-lang="ja"] .block-head h2 { font-size: 36px; line-height: 1.15; }
body[data-lang="zh"] .block-head h2 { font-size: 38px; line-height: 1.15; }
.block-head p { color: var(--ink-2); margin: 8px 0 0; max-width: 460px; }
.block-head .link {
  font-size: 14px; color: var(--ink); text-decoration: none;
  border-bottom: 1px solid var(--ink); padding-bottom: 2px;
  white-space: nowrap;
}

/* ----- DISPLAY HEADINGS ----- */
.display {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(48px, 6vw, 84px);
  line-height: .98;
  letter-spacing: -.025em;
  font-weight: 400;
  margin: 0;
}
.display em { font-style: italic; color: var(--accent-deep); }
body[data-lang="ja"] .display { font-size: clamp(40px, 5vw, 64px); line-height: 1.1; }
body[data-lang="zh"] .display { font-size: clamp(42px, 5.4vw, 70px); line-height: 1.08; }

/* ----- INPUTS ----- */
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label {
  font-size: 12px; font-weight: 600; letter-spacing: .04em;
  color: var(--ink-2);
}
.input, .textarea, .select {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-family: inherit; font-size: 14px; color: var(--ink);
  width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--ink), transparent 90%);
}
.textarea { resize: vertical; min-height: 88px; }

/* ----- FOOTER ----- */
footer {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding: 48px 32px 36px;
}
.foot-inner { max-width: 1280px; margin: 0 auto; }
.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}
.foot-col h5 {
  font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-2); margin: 0 0 14px; font-weight: 600;
}
.foot-col a {
  display: block; color: var(--ink); text-decoration: none;
  font-size: 14px; margin-bottom: 8px;
}
.foot-col a:hover { text-decoration: underline; }
.foot-tag {
  font-family: 'Instrument Serif', serif;
  font-size: 28px; letter-spacing: -.02em;
  margin: 16px 0 12px;
  max-width: 280px; line-height: 1.05;
}
.foot-bottom {
  display: flex; justify-content: space-between;
  padding-top: 24px; border-top: 1px solid var(--line);
  font-size: 13px; color: var(--ink-2);
}

/* ----- TWEAKS PANEL ----- */
#tweaks {
  position: fixed; bottom: 24px; right: 24px;
  width: 300px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  z-index: 80;
  overflow: hidden;
  font-family: 'Inter', sans-serif;
  display: none;
  color: var(--ink);
}
#tweaks.open { display: block; }
.tw-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}
.tw-head .ttl {
  font-family: 'Instrument Serif', serif; font-size: 22px;
  letter-spacing: -.02em;
}
.tw-close {
  width: 26px; height: 26px; border-radius: 999px;
  background: var(--bg-2); border: none; cursor: pointer;
  display: grid; place-items: center; color: var(--ink);
  font-family: inherit; font-size: 16px;
}
.tw-section { padding: 16px; border-bottom: 1px solid var(--line); }
.tw-section:last-child { border-bottom: none; }
.tw-label {
  font-size: 11px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center;
}
.tw-label .val { text-transform: none; letter-spacing: 0; color: var(--ink); font-weight: 500; }
.swatches { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.swatch {
  aspect-ratio: 1;
  border-radius: 10px;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 4px;
  background: var(--bg-2);
  transition: transform .15s, border-color .15s;
}
.swatch:hover { transform: translateY(-1px); }
.swatch.active { border-color: var(--ink); }
.swatch-grid {
  width: 100%; height: 100%; border-radius: 6px;
  display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,.08);
}
.langs { display: grid; grid-template-columns: 1fr; gap: 6px; }
.lang {
  padding: 9px 12px;
  border-radius: 10px;
  background: var(--bg-2);
  border: 1px solid transparent;
  font-family: inherit; font-size: 13px; color: var(--ink);
  cursor: pointer;
  display: flex; align-items: center; gap: 10px;
  text-align: left;
}
.lang:hover { background: color-mix(in oklab, var(--bg-2), var(--ink) 4%); }
.lang.active {
  border-color: var(--ink);
  background: var(--card);
  box-shadow: var(--shadow-sm);
}
.lang .flag {
  width: 22px; height: 22px; border-radius: 6px;
  background: var(--bg);
  display: grid; place-items: center;
  font-size: 13px;
  border: 1px solid var(--line);
}

/* ----- DARK SECTION (inverts on light themes; subtle on dark) ----- */
.dark-section {
  background: var(--dark-bg);
  color: var(--dark-fg);
  border-radius: 28px;
}
.dark-section h1, .dark-section h2 { color: var(--dark-fg); }
.dark-section h2 em, .dark-section .display em { color: var(--dark-accent-fg); }
.dark-section .lede { color: var(--dark-fg-2); }
.dark-section .eyebrow {
  background: rgba(255,255,255,.06);
  color: var(--dark-fg-2);
  border-color: rgba(255,255,255,.12);
}

/* ----- DIVIDER LIST ----- */
.dlist { display: flex; flex-direction: column; }
.dlist > * { padding: 18px 0; border-bottom: 1px solid var(--line); }
.dlist > *:last-child { border-bottom: none; }

/* ----- ROW ----- */
.row { display: flex; gap: 12px; align-items: center; }
.row.between { justify-content: space-between; }
.col { display: flex; flex-direction: column; gap: 4px; }

/* ----- RESPONSIVE ----- */
@media (max-width: 980px) {
  .nav-links { display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  section.block { padding: 48px 24px; }
  .block-head { flex-direction: column; align-items: flex-start; }
  #tweaks { right: 12px; left: 12px; width: auto; bottom: 12px; }
}