/* ===========================================================
   生活小工具 LEDGER — 設計系統
   概念：日常計算機像一張張「收據」— 輸入資料、印出結果。
   Palette: paper #FAF7F2 / ink #1C2321 / teal #205C55 / amber #E2A63B / line #D8D2C4 / muted #6B6459
   Type: 標題與標籤用等寬字（收據機感），內文用 Inter
=========================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --paper: #FAF7F2;
  --paper-raised: #FFFFFF;
  --ink: #1C2321;
  --teal: #205C55;
  --teal-dark: #163F3A;
  --amber: #E2A63B;
  --line: #D8D2C4;
  --muted: #6B6459;
  --radius: 10px;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
}

a { color: var(--teal); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

.page { max-width: 720px; margin: 0 auto; padding: 0 20px 60px; }

/* ---------- Header ---------- */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0 18px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 28px;
}
.brand {
  font-family: var(--mono); font-weight: 800; letter-spacing: 0.02em;
  font-size: 1.05rem; color: var(--ink); text-decoration: none;
}
.brand::before { content: "▮▮▮ "; color: var(--amber); letter-spacing: -2px; }
.site-header nav a {
  font-family: var(--mono); font-size: 0.8rem; text-decoration: none;
  color: var(--ink); border: 1.5px solid var(--ink); border-radius: 20px;
  padding: 6px 14px; font-weight: 600;
}
.site-header nav a:hover { background: var(--ink); color: var(--paper); }

.back-link {
  display: inline-block; font-family: var(--mono); font-size: 0.78rem;
  text-decoration: none; color: var(--muted); margin-bottom: 18px;
}
.back-link:hover { color: var(--teal); }

/* ---------- Hero (homepage) ---------- */
.hero { padding: 10px 0 30px; }
.hero .eyebrow {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.12em;
  color: var(--teal); font-weight: 700; text-transform: uppercase;
}
.hero h1 {
  font-family: var(--mono); font-size: clamp(1.6rem, 5vw, 2.3rem);
  font-weight: 800; margin: 10px 0 12px; line-height: 1.25;
}
.hero p { color: var(--muted); font-size: 1rem; max-width: 46ch; }

/* ---------- Tool list (homepage) ---------- */
.tool-list { list-style: none; padding: 0; margin: 30px 0; border-top: 1px solid var(--line); }
.tool-list li { border-bottom: 1px solid var(--line); }
.tool-list a {
  display: flex; align-items: baseline; gap: 12px;
  padding: 16px 4px; text-decoration: none; color: var(--ink);
}
.tool-list .num {
  font-family: var(--mono); font-weight: 700; color: var(--amber); font-size: 0.9rem; flex-shrink: 0;
}
.tool-list .name { font-weight: 600; flex-shrink: 0; }
.tool-list .leader {
  flex: 1; border-bottom: 2px dotted var(--line); height: 1px; align-self: center; margin: 0 2px;
}
.tool-list .desc { color: var(--muted); font-size: 0.85rem; flex-shrink: 0; text-align: right; }
.tool-list .arrow { color: var(--teal); font-family: var(--mono); flex-shrink: 0; }
.tool-list a:hover .name { color: var(--teal); }
.tool-list a:hover .arrow { transform: translateX(3px); }
.tool-list .arrow { display: inline-block; transition: transform 0.15s ease; }

/* ---------- Tool page ---------- */
h1.tool-title { font-family: var(--mono); font-size: clamp(1.4rem, 4vw, 1.8rem); font-weight: 800; margin: 0 0 8px; }
.lede { color: var(--muted); margin: 0 0 24px; }

.tool-card {
  background: var(--paper-raised); border: 1.5px solid var(--ink); border-radius: var(--radius);
  padding: 22px; box-shadow: 4px 4px 0 var(--line);
}
.field { margin-bottom: 16px; }
.field label {
  display: block; font-family: var(--mono); font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin-bottom: 6px;
}
.field-row { display: flex; gap: 12px; }
.field-row .field { flex: 1; }

input[type=text], input[type=number], input[type=date], select, textarea {
  width: 100%; padding: 11px 12px; border-radius: 6px; border: 1.5px solid var(--line);
  background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 1rem;
}
input:focus, select:focus, textarea:focus { border-color: var(--teal); }

.btn {
  display: inline-block; width: 100%; padding: 13px 16px; margin-top: 6px;
  background: var(--ink); color: var(--paper); border: none; border-radius: 6px;
  font-family: var(--mono); font-weight: 700; font-size: 0.95rem; letter-spacing: 0.02em;
  cursor: pointer; text-align: center;
}
.btn:hover { background: var(--teal); }
.btn.btn-outline { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); }
.btn.btn-outline:hover { background: var(--ink); color: var(--paper); }
.btn-row { display: flex; gap: 10px; }
.btn-row .btn { width: auto; flex: 1; }

/* ---------- Receipt result ---------- */
.receipt {
  position: relative; margin: 26px 0; background: var(--paper-raised);
  border-left: 1.5px solid var(--ink); border-right: 1.5px solid var(--ink);
  padding: 22px 22px 26px; font-family: var(--mono);
  display: none;
}
.receipt.show { display: block; }
.receipt::before, .receipt::after {
  content: ""; position: absolute; left: 0; right: 0; height: 10px;
  background-image: radial-gradient(circle at 10px 0, var(--paper) 6px, transparent 6.5px);
  background-size: 20px 10px; background-repeat: repeat-x;
}
.receipt::before { top: -1px; }
.receipt::after { bottom: -1px; transform: rotate(180deg); }
.receipt .r-label {
  font-size: 0.68rem; letter-spacing: 0.15em; color: var(--muted); text-transform: uppercase;
  border-bottom: 1px dashed var(--line); padding-bottom: 10px; margin-bottom: 12px;
  display: flex; justify-content: space-between;
}
.receipt .r-main { font-size: 1.7rem; font-weight: 800; color: var(--teal-dark); margin: 8px 0; }
.receipt .r-line { display: flex; justify-content: space-between; font-size: 0.88rem; padding: 4px 0; color: var(--ink); }
.receipt .r-line span:last-child { font-weight: 600; }
.receipt .r-note { margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--line); font-size: 0.78rem; color: var(--muted); font-family: var(--sans); }

/* ---------- Ad slot ---------- */
.ad-slot {
  margin: 30px 0; padding: 18px; border: 1px dashed var(--line); border-radius: 8px;
  text-align: center; color: var(--muted); font-size: 0.75rem; font-family: var(--mono);
  letter-spacing: 0.08em; text-transform: uppercase;
}

/* ---------- Explainer ---------- */
.explainer { margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--line); }
.explainer h2 { font-family: var(--mono); font-size: 1rem; margin-bottom: 8px; }
.explainer p { color: var(--muted); font-size: 0.92rem; }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 50px; padding-top: 20px; border-top: 2px solid var(--ink);
  font-size: 0.78rem; color: var(--muted); text-align: center;
}
.site-footer a { color: var(--muted); text-decoration: underline; margin: 0 6px; }

/* ---------- Wheel (random picker) ---------- */
.wheel-wrap { display: flex; flex-direction: column; align-items: center; gap: 16px; }
#wheelCanvas { max-width: 100%; }
.wheel-pointer { font-family: var(--mono); color: var(--amber); font-size: 1.4rem; margin-top: -14px; }

/* ---------- 使用教學 Steps ---------- */
.steps {
  display: flex; flex-direction: column; gap: 10px; margin: 18px 0 26px;
  background: var(--paper-raised); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px;
}
.steps .steps-title {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 4px;
}
.step { display: flex; align-items: center; gap: 12px; font-size: 0.9rem; }
.step .step-num {
  flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: var(--teal); color: var(--paper);
  font-family: var(--mono); font-weight: 700; font-size: 0.78rem; display: flex; align-items: center; justify-content: center;
}

/* ---------- 上傳拖曳區 ---------- */
.dropzone {
  border: 2px dashed var(--line); border-radius: var(--radius); padding: 28px 16px; text-align: center;
  color: var(--muted); cursor: pointer; background: var(--paper); transition: border-color 0.15s, background 0.15s;
}
.dropzone.drag { border-color: var(--teal); background: rgba(32,92,85,0.06); }
.dropzone .dz-title { font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.dropzone .dz-hint { font-size: 0.78rem; }
.file-list { margin: 14px 0; padding: 0; list-style: none; }
.file-list li {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 8px 12px; background: var(--paper); border: 1px solid var(--line); border-radius: 6px; margin-bottom: 8px; font-size: 0.85rem;
}
.file-list button { background: none; border: none; color: var(--muted); cursor: pointer; font-family: var(--mono); }
.file-list button:hover { color: #b23b3b; }

/* ---------- 色彩 / 選項列 ---------- */
.color-row { display: flex; align-items: center; gap: 10px; }
input[type=color] { width: 42px; height: 40px; padding: 2px; border: 1.5px solid var(--line); border-radius: 6px; background: var(--paper); cursor: pointer; }
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  font-family: var(--mono); font-size: 0.78rem; padding: 7px 13px; border-radius: 20px;
  border: 1.5px solid var(--ink); background: transparent; color: var(--ink); cursor: pointer; font-weight: 600;
}
.chip.active, .chip:hover { background: var(--ink); color: var(--paper); }
.canvas-preview { display: flex; justify-content: center; padding: 10px 0; }
.canvas-preview canvas, .canvas-preview img { max-width: 100%; border-radius: 6px; }

/* ---------- 分類標題 (首頁) ---------- */
.cat-title {
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--teal); font-weight: 700; margin: 30px 0 6px;
}
.cat-title:first-of-type { margin-top: 10px; }

@media (max-width: 480px) {
  .tool-list a { flex-wrap: wrap; }
  .tool-list .desc { display: none; }
  .field-row { flex-direction: column; gap: 0; }
}