:root {
  --bg: #f3f0ea;
  --ink: #1c1917;
  --muted: #6f675e;
  --card: #fffdfb;
  --line: #e6dfd4;
  --accent: #9c4221;
  --accent-ink: #7c3419;
  --soft: #f6e8df;
  --danger: #9f2d2d;
  --shadow: 0 12px 30px rgba(40, 30, 10, 0.06);
  --surface: #fff;
  --header: rgba(243, 240, 234, 0.92);
  --nav: #fffdfb;
  --danger-bg: #fde8e4;
  --badge-card-bg: #e7f1f8;
  --badge-card-ink: #0f4c81;
  --badge-page-bg: #fdece4;
  --badge-page-ink: #c2410c;
  color-scheme: light;
  font-family: "IBM Plex Sans JP", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

:root[data-theme="dark"] {
  --bg: #121416;
  --ink: #f2f0ec;
  --muted: #a39e96;
  --card: #1c2126;
  --line: #343b42;
  --accent: #e08a62;
  --accent-ink: #f0c2ad;
  --soft: #2c241f;
  --danger: #ffb4a8;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  --surface: #22282e;
  --header: rgba(18, 20, 22, 0.92);
  --nav: #16191c;
  --danger-bg: #3a2220;
  --badge-card-bg: #1c2c3a;
  --badge-card-ink: #c5e2f8;
  --badge-page-bg: #3a261c;
  --badge-page-ink: #ffc7ad;
  color-scheme: dark;
}

:root[data-theme="dark"] body {
  background:
    radial-gradient(900px 420px at 50% -80px, rgba(176, 92, 58, 0.22), transparent 70%),
    var(--bg);
}

:root[data-theme="dark"] .btn-primary,
:root[data-theme="dark"] .tap-image span,
:root[data-theme="dark"] .bio-links a,
:root[data-theme="dark"] .share-body .btn-primary {
  color: #1c1917;
}

:root[data-theme="dark"] .stat strong,
:root[data-theme="dark"] .metrics strong,
:root[data-theme="dark"] .count strong,
:root[data-theme="dark"] .eyebrow,
:root[data-theme="dark"] .nav-desktop a[aria-current="page"],
:root[data-theme="dark"] .bottom-nav a[aria-current="page"] {
  color: var(--accent-ink);
}

* { box-sizing: border-box; }
body { margin: 0; }
body.has-nav { padding-bottom: 84px; }
a { color: var(--accent-ink); }
img { max-width: 100%; }
button, input, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }

.site-header, .wrap { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--header);
  backdrop-filter: blur(10px);
}
.brand { display: flex; gap: 10px; align-items: center; color: inherit; text-decoration: none; font-weight: 700; }
.logo {
  width: 28px; height: 28px; border-radius: 8px; background: var(--accent);
  position: relative;
}
.logo::before {
  content: "";
  position: absolute; left: 7px; top: 13px; width: 10px; height: 2px; background: #fff;
  box-shadow: 8px -4px 0 -1px #fff, 8px 4px 0 -1px #fff;
}
.header-tools { display: flex; align-items: center; gap: 12px; }
.nav-desktop { display: none; gap: 18px; }
.theme-toggle {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 6px 12px;
  cursor: pointer;
  font-weight: 600;
}
.theme-toggle-fixed { position: fixed; top: 12px; right: 12px; z-index: 20; }
.nav-desktop a, .bottom-nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.nav-desktop a[aria-current="page"], .bottom-nav a[aria-current="page"] { color: var(--accent); }

.hero h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.2; margin: 8px 0; letter-spacing: -0.03em; }
.lede { color: var(--muted); font-size: 17px; }
.eyebrow { margin: 0; color: var(--accent); font-weight: 700; letter-spacing: 0.04em; }
.hero-actions, .actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.site-foot { color: var(--muted); font-size: 13px; margin: 28px 0 12px; }

.stats, .feature-grid, .metrics { display: grid; gap: 12px; }
.stats, .metrics { grid-template-columns: repeat(3, 1fr); margin: 18px 0; }
.feature-grid { grid-template-columns: 1fr; }
.stat, .feature, .panel, .mock, .share-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.stat, .metrics div { text-align: center; padding: 16px 8px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; }
.stat strong, .metrics strong { display: block; font-size: 28px; color: var(--accent); }
.stat span, .metrics span { color: var(--muted); font-size: 13px; }
.feature, .panel { padding: 20px; }
.feature h2, .panel h1, .panel h2 { margin: 0 0 8px; }
.steps { margin: 0; padding-left: 1.2em; }
.hint, .muted { color: var(--muted); }
.hint code { font-size: 0.92em; }

.callout, .banner {
  border-radius: 14px;
  padding: 12px 14px;
  margin: 12px 0;
  background: var(--soft);
}
.banner-error { background: var(--danger-bg); color: var(--danger); }

.composer { display: grid; gap: 16px; }
.modes { display: grid; grid-template-columns: 1fr; gap: 8px; }
.mode, .btn {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 10px 16px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  justify-content: center;
  align-items: center;
}
.mode.is-active { background: var(--soft); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); width: 100%; }
.btn-ghost { background: var(--surface); }
.btn-danger { background: var(--surface); color: var(--danger); border-color: #e7c1c1; }
.field { display: grid; gap: 6px; margin: 14px 0; }
.field-label { font-weight: 600; margin-top: 8px; }
input[type="text"], input[type="password"], input:not([type]), textarea, .slug-box {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--surface);
}
.slug-box { display: flex; align-items: center; gap: 6px; color: var(--muted); }
.slug-box input { border: 0; padding: 0; width: auto; flex: 1; }
.check { display: flex; gap: 8px; align-items: center; margin: 8px 0; }
.themes { border: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.themes label { border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.link-row { display: grid; grid-template-columns: 1fr 1.4fr auto; gap: 8px; margin-bottom: 8px; }
.link-row button { border: 0; background: transparent; cursor: pointer; font-size: 20px; }
.current-image, .mock img, .share-card img { border-radius: 12px; display: block; width: 100%; margin-top: 8px; }
.tap-image {
  display: block;
  margin: 0;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}
.tap-image img { margin: 0; border-radius: 18px 18px 0 0; }
.tap-image span {
  display: block;
  text-align: center;
  padding: 14px 16px;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
}
.tap-title { display: block; padding: 28px 16px 8px; text-align: center; font-size: 22px; }
.live { align-self: start; }
.mock { padding: 12px; }
#preview-title { display: block; }

.item-list { display: grid; gap: 10px; }
.item-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  overflow: hidden;
}
.item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 14px;
  text-decoration: none;
  color: inherit;
}
.item-main { display: grid; gap: 4px; }
.link-counts { padding: 0 14px 8px; }
.link-counts strong { color: var(--accent); font-weight: 700; }
.badge { display: inline-block; border-radius: 999px; padding: 2px 8px; font-size: 12px; background: var(--soft); color: var(--accent-ink); }
.badge-card { background: var(--badge-card-bg); color: var(--badge-card-ink); }
.badge-page { background: var(--badge-page-bg); color: var(--badge-page-ink); }
.count { font-weight: 700; text-align: right; white-space: nowrap; }
.count strong { display: block; font-size: 22px; color: var(--accent); }
.count span { display: block; font-weight: 500; color: var(--muted); font-size: 13px; }
.copy-row { display: flex; gap: 8px; }
.copy-row input { flex: 1; }
.copy-row .btn { width: auto; }
.bars { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; align-items: end; height: 120px; margin: 8px 0 18px; }
.bar { display: flex; flex-direction: column; justify-content: flex-end; align-items: center; height: 100%; gap: 4px; color: var(--muted); font-size: 12px; }
.bar-fill { width: 100%; background: var(--accent); border-radius: 8px 8px 2px 2px; min-height: 2px; }
.plain { list-style: none; padding: 0; margin: 0; }
.plain li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.empty { text-align: center; padding: 12px 0 4px; }
.narrow { max-width: 520px; }

.bottom-nav {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: flex; justify-content: space-around;
  background: var(--nav); border-top: 1px solid var(--line);
  padding: 10px 8px calc(10px + env(safe-area-inset-bottom));
}

.preview-page, .bio { min-height: 100vh; }
.preview-wrap, .bio { display: grid; place-items: center; padding: 32px 16px; }
.share-card, .bio-card { width: min(440px, 100%); }
.share-body, .bio-card { padding: 18px; text-align: center; }
.bio-card { background: transparent; box-shadow: none; border: 0; }
.theme-forest { background: #e7f3ec; }
.theme-ink { background: #eceae4; }
.theme-coral { background: #fdece4; }
.theme-sea { background: #e7f1f8; }
.avatar { width: 96px; height: 96px; border-radius: 50%; object-fit: cover; margin: 0 auto 8px; }
.avatar-fallback {
  display: grid; place-items: center; background: var(--surface); font-size: 36px; font-weight: 700;
}
.bio-text { white-space: pre-wrap; }
.bio-links a, .share-body .btn-primary {
  display: block; margin: 10px 0; padding: 14px 16px; border-radius: 999px;
  background: var(--accent); color: #fff; text-decoration: none; font-weight: 700;
}
.theme-ink .bio-links a { background: #1c1915; }
.theme-coral .bio-links a { background: #c2410c; }
.theme-sea .bio-links a { background: #0f4c81; }
:root[data-theme="dark"] .theme-forest { background: #10241c; }
:root[data-theme="dark"] .theme-ink { background: #141311; }
:root[data-theme="dark"] .theme-coral { background: #2a1612; }
:root[data-theme="dark"] .theme-sea { background: #10202c; }
:root[data-theme="dark"] .theme-ink .bio-links a { background: #f3efe6; color: #1c1915; }
.bio-foot { color: var(--muted); font-size: 13px; }

@media (min-width: 800px) {
  body.has-nav { padding-bottom: 0; }
  .nav-desktop { display: flex; }
  .header-tools { gap: 18px; }
  .bottom-nav { display: none; }
  .modes { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .composer { grid-template-columns: 1.4fr 0.8fr; align-items: start; }
  .live { position: sticky; top: 84px; }
  .btn-primary { width: auto; }
  .panel .btn-primary { width: 100%; }
}