/* =========================================================
   家計簿くん — ledger-paper theme
   トークン: 紙の家計簿 × 承認印（はんこ）をモチーフにしたデザイン
   ========================================================= */

:root {
  --paper: #fbf8f2;
  --paper-line: #e3ddc8;
  --card-bg: #ffffff;
  --ink: #232b24;
  --ink-soft: #5b6459;
  --seal: #b23b3b;
  --seal-dark: #8f2c2c;
  --ledger-green: #2f6f5e;
  --ledger-green-soft: #dbe9e2;
  --mustard: #c79a2e;
  --danger-bg: #f7e3e3;
  --radius-card: 14px;
  --radius-btn: 10px;
  --shadow-card: 0 1px 2px rgba(35, 43, 36, 0.06), 0 6px 16px rgba(35, 43, 36, 0.05);
  --font-display: "Shippori Mincho", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

/* 紙の横罫線テクスチャ */
body {
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 27px,
    var(--paper-line) 27px,
    var(--paper-line) 28px
  );
}

#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  padding-bottom: 84px;
  position: relative;
}

button { font-family: inherit; }
input, select { font-family: inherit; }

/* ---------- ヘッダー ---------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 10px;
}

.logo { display: flex; align-items: center; gap: 10px; }

.logo-seal {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--seal);
  color: var(--seal);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: rotate(-6deg);
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
}

.ghost-btn {
  background: none;
  border: 1px solid var(--paper-line);
  color: var(--ink-soft);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.ghost-btn:hover { border-color: var(--ledger-green); color: var(--ledger-green); }

/* ---------- 共通カード ---------- */
main { padding: 4px 20px 20px; }

.paper-card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
  margin-bottom: 18px;
}

.paper-card h2 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 14px;
  color: var(--ink);
}

.screen[hidden] { display: none; }

/* ---------- 認証画面 ---------- */
.auth-card { margin-top: 24px; }

.auth-title {
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.5;
  font-weight: 700;
  margin: 0 0 8px;
}

.tagline { color: var(--ink-soft); font-size: 13px; margin: 0 0 20px; }

.tabs {
  display: flex;
  border-bottom: 1px solid var(--paper-line);
  margin-bottom: 18px;
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 10px 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab-btn.active {
  color: var(--ledger-green);
  border-bottom-color: var(--ledger-green);
  font-weight: 700;
}

.auth-form[hidden] { display: none; }

.field { display: block; margin-bottom: 14px; }
.field span {
  display: block;
  font-size: 12.5px;
  color: var(--ink-soft);
  margin-bottom: 5px;
}
.field input, .field select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-btn);
  font-size: 15px;
  background: var(--paper);
  color: var(--ink);
}
.field input:focus, .field select:focus,
button:focus-visible {
  outline: 2px solid var(--ledger-green);
  outline-offset: 1px;
}

.primary-btn {
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: var(--radius-btn);
  background: var(--ledger-green);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s ease;
}
.primary-btn:active { transform: scale(0.98); }

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--ink-soft);
  font-size: 12px;
  margin: 18px 0 14px;
}
.divider::before, .divider::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--paper-line);
}
.divider span { padding: 0 10px; }

.oauth-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-btn);
  background: #fff;
  font-size: 14px;
  cursor: pointer;
}

.error-text {
  color: var(--seal);
  background: var(--danger-bg);
  font-size: 13px;
  padding: 10px 12px;
  border-radius: 8px;
  margin-top: 14px;
}
.error-text[hidden] { display: none; }

/* ---------- はんこ（承認印）— このアプリのシグネチャー要素 ---------- */
.seal-stamp {
  width: 168px;
  height: 168px;
  margin: 18px auto 22px;
  border-radius: 50%;
  border: 3px double var(--seal);
  color: var(--seal-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: rotate(-4deg);
  position: relative;
  background:
    radial-gradient(circle at 50% 50%, rgba(178,59,59,0.04), transparent 70%);
}
.seal-stamp::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid var(--seal);
  border-radius: 50%;
  opacity: 0.55;
}
.seal-label {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.seal-amount {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  font-variant-numeric: tabular-nums;
}
.seal-amount small { font-size: 13px; font-weight: 500; margin-left: 2px; }
.seal-sub { font-size: 10.5px; color: var(--ink-soft); margin-top: 4px; }

/* 記録ボタンを押したときの「押印」演出 */
@keyframes stamp-impress {
  0% { transform: rotate(-4deg) scale(1); }
  40% { transform: rotate(-4deg) scale(0.9); }
  100% { transform: rotate(-4deg) scale(1); }
}
.seal-stamp.impressing { animation: stamp-impress 0.35s ease; }

/* ---------- レシート読み取り ---------- */
.receipt-scan { margin-bottom: 18px; }

.scan-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1.5px dashed var(--ledger-green);
  color: var(--ledger-green);
  border-radius: var(--radius-btn);
  padding: 12px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  background: var(--ledger-green-soft);
}

.ocr-status {
  font-size: 12.5px;
  color: var(--ink-soft);
  margin: 8px 2px 0;
}
.ocr-status[hidden] { display: none; }
.ocr-status.is-error { color: var(--seal); }

/* ---------- レシート風スタブ（一覧アイテム） ---------- */
.receipt-list { list-style: none; margin: 0; padding: 0; }

.receipt-list li {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 4px 14px;
  border-bottom: 1px dashed var(--paper-line);
}
.receipt-list li:last-child { border-bottom: none; }

.stub-category {
  flex-shrink: 0;
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--ledger-green-soft);
  color: var(--ledger-green);
  white-space: nowrap;
}

.stub-main { flex: 1; min-width: 0; }
.stub-memo {
  font-size: 13.5px;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.stub-date { font-size: 11px; color: var(--ink-soft); margin-top: 2px; }

.stub-amount {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--seal);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.empty-note {
  font-size: 13px;
  color: var(--ink-soft);
  text-align: center;
  padding: 10px 0 2px;
}
.empty-note[hidden] { display: none; }

/* ---------- 詳細画面 ---------- */
.month-picker {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin: 10px 0 18px;
}
.month-label {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  min-width: 110px;
  text-align: center;
}

.category-bars { display: flex; flex-direction: column; gap: 10px; }

.category-bar-row { display: flex; align-items: center; gap: 10px; }
.category-bar-name { width: 78px; font-size: 12.5px; flex-shrink: 0; }
.category-bar-track {
  flex: 1;
  height: 10px;
  background: var(--paper);
  border-radius: 999px;
  overflow: hidden;
}
.category-bar-fill {
  height: 100%;
  background: var(--ledger-green);
  border-radius: 999px;
}
.category-bar-amount {
  font-family: var(--font-mono);
  font-size: 12px;
  width: 64px;
  text-align: right;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

/* ---------- 下部ナビゲーション ---------- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 480px;
  display: flex;
  background: var(--card-bg);
  border-top: 1px solid var(--paper-line);
  padding: 8px 0 max(8px, env(safe-area-inset-bottom));
}
.bottom-nav[hidden] { display: none; }

.nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  background: none;
  border: none;
  color: var(--ink-soft);
  font-size: 11px;
  padding: 4px 0;
  cursor: pointer;
}
.nav-btn.active { color: var(--ledger-green); font-weight: 700; }

/* ---------- レイアウト：タブレット以上 ---------- */
@media (min-width: 640px) {
  #app { max-width: 560px; border-inline: 1px solid var(--paper-line); }
  .paper-card { padding: 26px; }
}