/* TaxBackJapan — single stylesheet. Clean, trustworthy, mobile-first. */

:root {
  --navy: #12335c;
  --blue: #1f5fa8;
  --blue-light: #e8f0fa;
  --accent: #c8102e;      /* Japanese vermilion accent, used sparingly */
  --accent-soft: #fbe9ec;
  --ink: #1a2230;
  --muted: #5a6472;
  --line: #dfe4ea;
  --bg: #f6f8fb;
  --card: #ffffff;
  --ok: #1f7a4d;
  --ok-soft: #e6f4ec;
  --warn: #a05a00;
  --warn-soft: #fdf2e0;
  --unconf: #7a4fb0;
  --unconf-soft: #f0eafb;
  --radius: 10px;
  --maxw: 960px;
  --shadow: 0 1px 3px rgba(18, 51, 92, 0.08), 0 6px 20px rgba(18, 51, 92, 0.06);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Hiragino Sans", "Noto Sans JP", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
}

a { color: var(--blue); }
a:hover { color: var(--navy); }

h1, h2, h3 { line-height: 1.25; color: var(--navy); }
h1 { font-size: 1.9rem; margin: 0 0 .4em; }
h2 { font-size: 1.4rem; margin: 1.8em 0 .5em; }
h3 { font-size: 1.12rem; margin: 1.4em 0 .3em; }

p { margin: 0 0 1em; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 60px;
  flex-wrap: wrap;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy);
  text-decoration: none;
  letter-spacing: -.01em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.brand .dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); display: inline-block;
}
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: .95rem;
}
.nav a:hover { background: var(--blue-light); color: var(--navy); }
.nav a.active { color: var(--navy); font-weight: 600; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, #123a6b 0%, #1f5fa8 100%);
  color: #fff;
  padding: 34px 0 30px;
}
.hero h1 { color: #fff; font-size: 2.1rem; }
.hero p { color: #dbe8f7; font-size: 1.08rem; max-width: 640px; }
.hero .updated { color: #b9d0ec; font-size: .85rem; }

/* ---------- Cards / sections ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  margin: 22px 0;
}
main { padding: 8px 0 40px; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 2px 8px;
  border-radius: 20px;
  vertical-align: middle;
}
.badge-confirmed { background: var(--ok-soft); color: var(--ok); }
.badge-unconfirmed { background: var(--unconf-soft); color: var(--unconf); }
.updated-line {
  font-size: .82rem;
  color: var(--muted);
  margin: 0 0 4px;
}

/* ---------- Calculator ---------- */
.calc { }
.calc .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
}
.field { display: flex; flex-direction: column; gap: 5px; }
.field.full { grid-column: 1 / -1; }
.field label { font-weight: 600; font-size: .92rem; color: var(--navy); }
.field .hint { font-size: .8rem; color: var(--muted); font-weight: 400; }
input[type="number"], input[type="date"], select {
  font: inherit;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  width: 100%;
}
input:focus, select:focus {
  outline: 2px solid var(--blue);
  outline-offset: 1px;
  border-color: var(--blue);
}
.presets { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 6px; }
.preset {
  font: inherit;
  font-size: .85rem;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 20px;
  cursor: pointer;
  color: var(--navy);
}
.preset:hover { background: var(--blue-light); border-color: var(--blue); }
.preset.active { background: var(--navy); color: #fff; border-color: var(--navy); }

.btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #a50d26; color: #fff; }
.btn-outline {
  background: #fff; color: var(--navy);
  border: 1px solid var(--blue);
}
.btn-block { width: 100%; }

/* ---------- Results ---------- */
.results { margin-top: 18px; }
.result-hero {
  background: var(--blue-light);
  border: 1px solid #cfe0f3;
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
}
.result-hero .label { font-size: .9rem; color: var(--muted); margin: 0; }
.result-hero .amount {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--navy);
  margin: 4px 0 2px;
  letter-spacing: -.02em;
}
.result-hero .usd { font-size: 1rem; color: var(--muted); }

.breakdown { width: 100%; border-collapse: collapse; margin: 14px 0 0; }
.breakdown td { padding: 8px 4px; border-bottom: 1px solid var(--line); }
.breakdown td:last-child { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.breakdown tr:last-child td { border-bottom: none; }

.note {
  border-radius: 8px;
  padding: 10px 14px;
  margin: 10px 0;
  font-size: .93rem;
}
.note-warn { background: var(--warn-soft); color: var(--warn); border: 1px solid #f0d9a8; }
.note-info { background: var(--blue-light); color: var(--navy); border: 1px solid #cfe0f3; }
.note-bad  { background: var(--accent-soft); color: #8a0a20; border: 1px solid #f2c2ca; }
.note ul { margin: 6px 0 0; padding-left: 20px; }
.note li { margin: 3px 0; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 12px 0 0; }
.steps li {
  position: relative;
  padding: 6px 0 6px 40px;
  border-bottom: 1px solid var(--line);
}
.steps li:last-child { border-bottom: none; }
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute; left: 0; top: 6px;
  width: 26px; height: 26px;
  background: var(--navy); color: #fff;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: .85rem; font-weight: 700;
}

/* ---------- Comparison table ---------- */
.table-scroll { overflow-x: auto; margin: 14px 0; }
table.data {
  width: 100%; border-collapse: collapse; min-width: 560px; font-size: .95rem;
}
table.data th, table.data td {
  border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top;
}
table.data th { background: var(--blue-light); color: var(--navy); }
table.data caption { text-align: left; color: var(--muted); font-size: .85rem; margin-bottom: 6px; }

/* ---------- FAQ ---------- */
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  margin: 12px 0;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 16px 18px;
  font-weight: 600;
  color: var(--navy);
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "+"; color: var(--accent); font-weight: 700; margin-right: 10px;
}
.faq-item[open] summary::before { content: "\2013"; }
.faq-body { padding: 0 18px 16px; }
.faq-body p:last-child { margin-bottom: 0; }
.source { font-size: .82rem; color: var(--muted); }
.source a { word-break: break-word; }
.faq-cat { margin-top: 2em; color: var(--accent); font-size: 1.05rem; text-transform: uppercase; letter-spacing: .05em; scroll-margin-top: 80px; }

/* FAQ category jump navigation */
.jump-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 22px 0 6px;
  font-size: .92rem;
}
.jump-nav strong { color: var(--navy); }
.jump-nav a {
  text-decoration: none;
  color: var(--blue);
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 20px;
  white-space: nowrap;
}
.jump-nav a:hover { background: var(--blue-light); border-color: var(--blue); color: var(--navy); }

/* ---------- Email CTA ---------- */
.cta {
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius);
  padding: 26px 22px;
  text-align: center;
  margin: 30px 0;
}
.cta h2 { color: #fff; margin-top: 0; }
.cta p { color: #cfdcec; max-width: 520px; margin: 0 auto 16px; }
.cta .btn-primary { background: var(--accent); }
.cta .soon { font-size: .8rem; color: #9fb6d1; margin-top: 10px; }

/* ---------- Disclaimer / footer ---------- */
.disclaimer {
  font-size: .88rem;
  color: var(--muted);
  background: #fff;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 24px 0;
}
.site-footer {
  background: var(--navy);
  color: #cfdcec;
  padding: 28px 0;
  font-size: .9rem;
}
.site-footer a { color: #fff; }
.site-footer .foot-nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 10px; }
.site-footer .fine { color: #8ea6c4; font-size: .82rem; }

.legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: .85rem; color: var(--muted); margin: 10px 0; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.swatch { width: 14px; height: 14px; border-radius: 3px; display: inline-block; }

.hidden { display: none !important; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  body { font-size: 16px; }
  h1 { font-size: 1.6rem; }
  .hero h1 { font-size: 1.7rem; }
  .calc .grid { grid-template-columns: 1fr; }
  .result-hero .amount { font-size: 2rem; }
  .site-header .wrap { min-height: auto; padding-top: 8px; padding-bottom: 8px; }
}