/* Free tools (calculators). Builds on styles.css; each tool page lives under docs/tools/<slug>/. */

.tool { max-width: 880px; margin: 0 auto; padding: clamp(28px, 5vw, 64px) 0 clamp(48px, 7vw, 88px); }
.tool-head { max-width: 660px; margin-bottom: clamp(22px, 3vw, 32px); }
.tool-head h1 { font-size: clamp(32px, 4.8vw, 52px); margin: 0 0 14px; }
.tool-head .lede { margin: 0; }
.tool-head .lede + .lede { margin-top: 12px; }

/* Calculator card: inputs on the left, result on the right; stacked on phones. */
.calc { display: grid; grid-template-columns: 1.1fr 0.9fr; background: #fff;
  border: 1px solid rgba(140, 110, 60, 0.16); border-radius: 24px;
  box-shadow: 0 24px 50px -32px rgba(22, 40, 30, 0.35); }
.calc-form { padding: clamp(20px, 3.4vw, 32px); display: grid; grid-template-columns: 1fr 1fr; gap: 18px 16px; align-content: start; margin: 0; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field.wide { grid-column: 1 / -1; }
.field label { font-size: 14.5px; font-weight: 600; color: var(--ink); }
.calc .hint { font-size: 13px; color: var(--ink-faint); margin-top: -3px; line-height: 1.4; }
.midtrip-grid > .hint { margin-top: -8px; }
.input-wrap { position: relative; }
.calc input, .calc select { width: 100%; font: inherit; font-family: var(--round); font-size: 18px; font-weight: 600;
  color: var(--ink); background: var(--paper); border: 1px solid rgba(22, 21, 15, 0.16); border-radius: 12px;
  padding: 11px 14px; min-height: 48px; font-variant-numeric: tabular-nums; -webkit-appearance: none; appearance: none;
  transition: border-color .15s, box-shadow .15s; }
.calc select { font-family: var(--sans); font-size: 16px; font-weight: 500; padding-right: 36px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234B4A41' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center; background-size: 14px; }
.input-wrap input { padding-right: 58px; }
.input-wrap .unit { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); font-size: 13px;
  font-weight: 700; letter-spacing: 0.06em; color: var(--ink-faint); pointer-events: none; }
.calc input:focus, .calc select:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.18); }

.midtrip { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 14px; }
.midtrip > summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between;
  gap: 12px; font-size: 15px; font-weight: 600; color: var(--green); padding: 4px 0; }
.midtrip > summary::-webkit-details-marker { display: none; }
.midtrip > summary::marker { content: ""; }
.midtrip > summary .caret { width: 14px; height: 14px; transition: transform .2s ease; flex: none; }
.midtrip[open] > summary .caret { transform: rotate(180deg); }
.midtrip-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 16px; padding-top: 14px; }

/* Currency picker: a searchable list that replaces the native select once the script runs. */
.calc select.is-replaced { display: none; }
.field-currency { position: relative; }
.cur-trigger { width: 100%; min-height: 48px; display: flex; align-items: center; gap: 10px; padding: 11px 36px 11px 14px;
  font: inherit; font-size: 16px; font-weight: 500; color: var(--ink); text-align: left; cursor: pointer;
  background: var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234B4A41' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center / 14px;
  border: 1px solid rgba(22, 21, 15, 0.16); border-radius: 12px; transition: border-color .15s, box-shadow .15s; }
.cur-trigger:focus-visible, .cur-trigger[aria-expanded="true"] { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.18); }
.cur-code { flex: none; font-family: var(--round); font-size: 13px; font-weight: 700; letter-spacing: 0.06em; color: var(--green);
  background: var(--mint); border-radius: 6px; padding: 2px 6px; }
.cur-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cur-pop { position: absolute; top: calc(100% + 6px); right: 0; z-index: 40; width: max(100%, 320px); max-width: calc(100vw - 32px);
  background: #fff; border: 1px solid rgba(22, 21, 15, 0.12); border-radius: 16px; overflow: hidden;
  box-shadow: 0 22px 44px -18px rgba(22, 40, 30, 0.4); }
.cur-pop[hidden] { display: none; }
.cur-search-wrap { padding: 10px; border-bottom: 1px solid var(--line); }
.calc .cur-search { font-family: var(--sans); font-size: 16px; font-weight: 500; min-height: 42px; padding: 9px 12px 9px 36px;
  background: var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B6A5D' stroke-width='2.4' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='M20 20l-3.5-3.5'/%3E%3C/svg%3E") no-repeat 12px center / 16px; }
.cur-list { position: relative; list-style: none; margin: 0; padding: 6px; max-height: 300px; overflow-y: auto; overscroll-behavior: contain; }
.cur-group { font-size: 11.5px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); padding: 10px 10px 4px; }
.cur-opt { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 10px; cursor: pointer; font-size: 15px; color: var(--ink); }
.cur-opt .cur-code { min-width: 46px; text-align: center; }
.cur-opt .cur-sym { margin-left: auto; padding-left: 8px; color: var(--ink-faint); font-size: 14px; white-space: nowrap; }
.cur-opt.active { background: var(--mint); }
.cur-opt[aria-selected="true"] { font-weight: 600; }
.cur-opt[aria-selected="true"] .cur-code { background: var(--green); color: #fff; }
.cur-empty { padding: 18px 12px; font-size: 14.5px; color: var(--ink-faint); text-align: center; }

/* Result */
.calc-result { background: linear-gradient(165deg, var(--green-deep) 0%, var(--green-darker) 100%); color: #EAF3EC;
  border-radius: 0 23px 23px 0; padding: clamp(24px, 3.4vw, 34px); display: flex; flex-direction: column; }
.result-label { font-size: 12px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); margin: 0 0 8px; }
.result-big { font-family: var(--round); font-weight: 700; font-size: clamp(46px, 7vw, 64px); line-height: 1; color: #fff;
  font-variant-numeric: tabular-nums; margin: 0; overflow-wrap: anywhere; }
.result-big .per { font-family: var(--sans); font-size: 18px; font-weight: 600; color: rgba(234, 243, 236, 0.78); letter-spacing: 0; margin-left: 4px; }
.result-sub { font-size: 15px; color: rgba(234, 243, 236, 0.82); margin: 10px 0 0; }
.calc-result.warn .result-label { color: #F2C47E; }
.calc-result.over .result-label { color: #F4A99A; }
.breakdown { margin: 22px 0 0; padding: 16px 0 0; border-top: 1px solid rgba(255, 255, 255, 0.14); display: grid; gap: 8px; }
.breakdown div { display: flex; justify-content: space-between; gap: 12px; font-size: 14.5px; }
.breakdown dt { color: rgba(234, 243, 236, 0.72); }
.breakdown dd { margin: 0; color: #fff; font-variant-numeric: tabular-nums; font-weight: 600; text-align: right; }
.breakdown .total { border-top: 1px solid rgba(255, 255, 255, 0.14); padding-top: 10px; margin-top: 2px; }
.breakdown .total dt { color: #fff; font-weight: 600; }
.breakdown [hidden] { display: none; }
.pace { margin: 16px 0 0; font-size: 14px; line-height: 1.5; color: rgba(234, 243, 236, 0.86); background: rgba(255, 255, 255, 0.07);
  border-radius: 12px; padding: 11px 13px; }
.pace[hidden] { display: none; }

/* The one call to action, directly under the result. */
.tool-cta { margin: 18px 0 0; padding: 22px clamp(20px, 3.4vw, 32px); background: var(--mint); border: 1px solid var(--line);
  border-radius: 20px; display: flex; align-items: center; justify-content: space-between; gap: 18px 28px; flex-wrap: wrap; }
.tool-cta p { margin: 0; color: var(--ink-soft); font-size: 15.5px; max-width: 52ch; }
.tool-cta strong { display: block; font-family: var(--serif); font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.tool-cta .appstore { flex: none; }

/* Phones: the result sits below the inputs, so a slim bar keeps the live number in sight while typing. */
.mini-result { position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 50;
  display: none; align-items: baseline; justify-content: space-between; gap: 12px; padding: 12px 18px; border-radius: 16px;
  background: var(--green-darker); color: rgba(234, 243, 236, 0.82); font-size: 14px; font-weight: 600;
  box-shadow: 0 14px 30px -12px rgba(22, 40, 30, 0.55); }
.mini-result b { font-family: var(--round); font-size: 22px; color: #fff; font-variant-numeric: tabular-nums; }
.mini-result.show { display: flex; }
.cur-open .mini-result.show { display: none; }
@media (min-width: 761px) { .mini-result.show { display: none; } }

.noscript-note { margin: 12px 0 0; font-size: 14px; color: var(--ink-faint); }

/* Explainer + FAQ under the tool */
.tool .doc { padding: clamp(36px, 5vw, 56px) 0 0; max-width: 720px; margin: 0; }
.formula { font-family: var(--round); font-size: 16px; font-weight: 600; color: var(--ink); background: var(--cream);
  border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; margin: 14px 0 18px; line-height: 1.5; }
.doc .formula { color: var(--ink); }
.doc p { margin: 0 0 14px; }

@media (max-width: 760px) {
  .calc { grid-template-columns: 1fr; }
  .calc-result { border-radius: 0 0 23px 23px; }
  .tool-cta { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  /* Big budgets ("300,000 JPY") need the full row on phones. */
  .field-budget, .field-currency { grid-column: 1 / -1; }
}
@media (max-width: 400px) {
  .calc-form, .midtrip-grid { gap: 16px 12px; }
  .input-wrap input { padding-right: 50px; }
  .input-wrap .unit { right: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  .midtrip > summary .caret { transition: none; }
}