/* たびわけの見た目。色と形はデザイン「たびわけ 画面デザイン」から */
:root {
  --bg: #F4FAFD; --card: #FFFFFF; --ink: #0E2A38; --muted: #4F6470; --line: #D3E4EC; --soft: #E3F1F7;
  --hero: #DDF1FA; --hero-ink: #0B4A66; --hero-sub: #3F6577;
  --primary: #0F6E9E; --primary-dark: #0B4A66; --accent: #E8B23A; --accent-bg: #FFF0C7; --accent-ink: #5B3F02;
  --round: 'Zen Maru Gothic', sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.6 'Noto Sans JP', system-ui, sans-serif; }
a { color: var(--primary); }
a:hover { color: var(--primary-dark); }
#app { max-width: 480px; min-height: 100vh; margin: 0 auto; display: flex; flex-direction: column; }

/* 上の帯 */
.hero { background: var(--hero); padding: 20px 20px 16px; display: flex; flex-direction: column; gap: 4px; }
.hero .brand { margin: 0; font-size: 12px; font-weight: 700; letter-spacing: 0.08em; color: var(--primary); }
.hero h1 { margin: 0; font-family: var(--round); font-size: 22px; line-height: 1.3; color: var(--hero-ink); }
.hero p { margin: 0; font-size: 13px; color: var(--hero-sub); }
.badge { display: inline-flex; align-self: flex-start; background: var(--accent-bg); color: var(--accent-ink); border-radius: 999px; padding: 3px 12px; font-size: 12px; font-weight: 700; }

/* 本文 */
.body { flex: 1; padding: 18px 20px 24px; display: flex; flex-direction: column; gap: 14px; }
h2 { margin: 0; font-family: var(--round); font-size: 18px; line-height: 1.4; }
h2.q { font-size: 20px; }
.note { margin: 0; font-size: 12px; color: var(--muted); }
.center { text-align: center; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; display: flex; flex-direction: column; gap: 10px; }
.card.list { padding: 0; gap: 0; overflow: hidden; }
.card.list > * { padding: 12px 16px; border-top: 1px solid var(--soft); }
.card.list > :first-child { border-top: 0; }
.card.warn { border: 2px solid var(--accent); }
.row { display: flex; align-items: center; gap: 10px; }
.card.row { flex-direction: row; }
.row.between { justify-content: space-between; }
.grow { flex: 1; }
.stack { display: flex; flex-direction: column; gap: 6px; }
.label { font-size: 13px; font-weight: 700; }
.sub { font-size: 12px; color: var(--muted); }
.big { font-family: var(--round); font-size: 24px; font-weight: 700; color: var(--hero-ink); }

/* 入力 */
input, select, textarea { font: inherit; font-size: 15px; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; min-height: 44px; width: 100%; }
::placeholder { color: #9AACB5; }
label.field { display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 700; }
label.field.inline { flex-direction: row; align-items: center; gap: 10px; }
label.field span.sub { font-weight: 400; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
button { font: inherit; cursor: pointer; }
.chip { font-size: 14px; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 999px; padding: 8px 14px; min-height: 44px; }
.chip[aria-pressed="true"] { font-weight: 700; border-color: var(--primary); background: var(--primary); color: #FFFFFF; }
.chip.dashed { border-style: dashed; }
.seg { display: flex; gap: 4px; }
.seg button { flex: 1; word-break: keep-all; font-size: 13px; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 8px; min-height: 44px; padding: 0 4px; }
.seg button[aria-pressed="true"] { font-weight: 700; border-color: var(--primary); background: var(--soft); color: var(--hero-ink); }
.btn { font-size: 15px; font-weight: 700; border: 0; background: var(--primary); color: #FFFFFF; border-radius: 12px; min-height: 48px; padding: 0 16px; }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn.ghost { font-weight: 400; border: 1px solid var(--line); background: var(--card); color: var(--ink); }
.btn.outline { border: 1px solid var(--primary); background: var(--card); color: var(--primary); }
.link { align-self: flex-start; font-size: 13px; color: var(--primary); background: none; border: 0; padding: 0; min-height: 44px; text-decoration: underline; }
.buttons { display: flex; gap: 10px; }
.buttons .btn { flex: 1; }
.buttons .btn:last-child { flex: 2; }
.progress { flex: 1; height: 8px; background: var(--soft); border-radius: 999px; overflow: hidden; }
.progress > div { height: 100%; background: var(--primary); border-radius: 999px; }
.error { background: var(--accent-bg); color: var(--accent-ink); border-radius: 10px; padding: 10px 14px; font-size: 13px; }
.copy { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--soft); border-radius: 10px; padding: 12px 14px; font-size: 14px; }

/* 下のタブ */
#app:has(nav.tabs) .body { padding-bottom: 72px; }
nav.tabs { position: sticky; bottom: 0; display: flex; border-top: 1px solid var(--line); background: var(--card); }
nav.tabs a { flex: 1; display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--muted); text-decoration: none; border-top: 3px solid transparent; min-height: 56px; }
nav.tabs a[aria-current="page"] { font-weight: 700; color: var(--primary); border-top-color: var(--primary); }