/* Group Tour Cost Calculator — design tokens
   Concept: a travel operator's cost ledger, with a torn ticket-stub
   summary panel that tallies the trip as line items are added. */

:root {
  --color-bg: #F1F4EF;
  --color-surface: #FFFFFF;
  --color-ink: #1A2421;
  --color-ink-soft: #55635C;
  --color-ink-faint: #8B978F;
  --color-primary: #0F5C51;
  --color-primary-dark: #0A423A;
  --color-primary-tint: #E3EDE9;
  --color-accent: #C98A2C;
  --color-accent-tint: #F7ECD8;
  --color-line: #DCE3DD;
  --color-danger: #A6412A;
  --color-danger-tint: #F6E4DF;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "IBM Plex Sans", -apple-system, Segoe UI, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --radius-s: 6px;
  --radius-m: 10px;
  --shadow-card: 0 1px 2px rgba(20, 30, 25, 0.06), 0 8px 24px rgba(20, 30, 25, 0.06);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.4em;
  color: var(--color-ink);
}

.site-header {
  border-bottom: 1px solid var(--color-line);
  background: var(--color-surface);
}

.site-header__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-header__brand {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary-dark);
  text-decoration: none;
}

.site-header__tagline {
  color: var(--color-ink-faint);
  font-size: 13px;
  margin-left: 10px;
}

.site-header nav a {
  color: var(--color-ink-soft);
  text-decoration: none;
  font-size: 14.5px;
  margin-left: 22px;
}

.site-header nav a:hover { color: var(--color-primary); }

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 36px 24px 80px;
}

.page--narrow { max-width: 640px; }

.calc-layout {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 32px;
  align-items: start;
}

@media (max-width: 860px) {
  .calc-layout { grid-template-columns: 1fr; }
}

.intro h1 { font-size: 30px; }
.intro p { color: var(--color-ink-soft); max-width: 60ch; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-m);
  padding: 26px 28px;
  margin-bottom: 22px;
}

.card h2 {
  font-size: 17px;
  letter-spacing: 0.01em;
}

.card h2 .card__hint {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 12.5px;
  color: var(--color-ink-faint);
  margin-top: 3px;
}

.field-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
  flex: 1;
  min-width: 160px;
}

.field label {
  font-size: 13px;
  color: var(--color-ink-soft);
  font-weight: 500;
}

.field--small { max-width: 140px; flex: 0 0 auto; }

input[type="text"],
input[type="number"],
input[type="password"] {
  font-family: var(--font-body);
  font-size: 15px;
  padding: 10px 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-s);
  background: #FBFCFA;
  color: var(--color-ink);
}

input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
  background: #fff;
}

.item-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.item-row .field { margin-bottom: 0; }
.item-row .field:first-child { flex: 2; }
.item-row .field:nth-child(2) { flex: 1; min-width: 120px; }

.item-row__remove {
  background: none;
  border: none;
  color: var(--color-ink-faint);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
}

.item-row__remove:hover {
  color: var(--color-danger);
  background: var(--color-danger-tint);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn--add {
  background: var(--color-primary-tint);
  color: var(--color-primary-dark);
  border-color: transparent;
}
.btn--add:hover { background: #d5e6df; }

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover { background: var(--color-primary-dark); }

.btn--ghost {
  background: transparent;
  border-color: var(--color-line);
  color: var(--color-ink-soft);
}
.btn--ghost:hover { border-color: var(--color-ink-faint); }

.btn--danger {
  background: var(--color-danger-tint);
  color: var(--color-danger);
}

.btn[disabled] { opacity: 0.55; cursor: default; }

.actions-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 8px;
  flex-wrap: wrap;
}

/* Receipt stub */
.receipt {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  padding: 28px 26px 24px;
  position: sticky;
  top: 24px;
}

.receipt::before,
.receipt::after {
  content: "";
  position: absolute;
  top: -11px;
  width: 22px;
  height: 22px;
  background: var(--color-bg);
  border-radius: 50%;
  border: 1px solid var(--color-line);
}
.receipt::before { left: -11px; }
.receipt::after { right: -11px; }

.receipt__eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--color-ink-faint);
  letter-spacing: 0.03em;
}

.receipt__tour-name {
  font-family: var(--font-display);
  font-size: 21px;
  margin: 4px 0 18px;
  word-break: break-word;
}

.receipt__line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
  color: var(--color-ink-soft);
  padding: 6px 0;
}

.receipt__line span:last-child {
  font-family: var(--font-mono);
  color: var(--color-ink);
}

.receipt__line--negative span:last-child { color: var(--color-danger); }

.receipt__divider {
  border: none;
  border-top: 2px dashed var(--color-line);
  margin: 14px 0;
}

.receipt__total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 4px;
}

.receipt__total-label {
  font-size: 13.5px;
  color: var(--color-ink-soft);
}

.receipt__total-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.receipt__per-person {
  background: var(--color-accent-tint);
  border-radius: var(--radius-s);
  padding: 14px 16px;
  margin-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.receipt__per-person-label {
  font-size: 13px;
  color: #7a5a1e;
}

.receipt__per-person-value {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: #7a5a1e;
}

.receipt__save-status {
  margin-top: 16px;
  font-size: 13.5px;
}

.receipt__save-status.is-success { color: var(--color-primary-dark); }
.receipt__save-status.is-error { color: var(--color-danger); }

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--color-primary-tint);
  color: var(--color-primary-dark);
  padding: 3px 9px;
  border-radius: 20px;
}

table.list-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

.list-table th, .list-table td {
  text-align: left;
  padding: 11px 12px;
  border-bottom: 1px solid var(--color-line);
}

.list-table th {
  color: var(--color-ink-faint);
  font-weight: 500;
  font-size: 12.5px;
  text-transform: none;
}

.list-table td.num, .list-table th.num { text-align: right; font-family: var(--font-mono); }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-ink-faint);
}

.notice {
  border-radius: var(--radius-s);
  padding: 12px 16px;
  font-size: 14px;
  margin-bottom: 18px;
}
.notice--error { background: var(--color-danger-tint); color: var(--color-danger); }
.notice--success { background: var(--color-primary-tint); color: var(--color-primary-dark); }

.checklist { list-style: none; padding: 0; margin: 0 0 20px; }
.checklist li {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 6px 0;
  font-size: 14px;
  color: var(--color-ink-soft);
}
.checklist .ok { color: var(--color-primary); font-weight: 600; }
.checklist .fail { color: var(--color-danger); font-weight: 600; }

.footer-note {
  color: var(--color-ink-faint);
  font-size: 12.5px;
  margin-top: 40px;
  text-align: center;
}

.link-plain { color: var(--color-ink-soft); text-decoration: underline; }

@media print {
  .site-header, .no-print { display: none !important; }
  body { background: #fff; }
  .calc-layout { display: block; }
  .receipt { position: static; box-shadow: none; }
  .card { border: none; padding: 0; margin-bottom: 18px; }
}