:root {
  --bg: #f2f2f4;
  --card-bg: #ffffff;
  --text: #1a1a1a;
  --text-dim: #8a8a8f;
  --border: #e6e6e9;
  --green: #22c55e;
  --green-bg: #e8f9ee;
  --red: #ef4444;
  --gray-bg: #f0f0f2;
  --radius: 18px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: #d9d9dd;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Helvetica Neue", Arial, sans-serif;
  height: 100%;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--bg);
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 40px rgba(0,0,0,0.08);
}

.view {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-bottom: 88px;
  min-height: 100vh;
}
.view.hidden { display: none; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 16px;
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 5;
}

.brand {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0.5px;
  margin: 0;
}

.records-title { font-size: 30px; }

.rocket { font-size: 24px; }

.icon-btn {
  border: none;
  background: none;
  font-size: 28px;
  line-height: 1;
  color: var(--text);
  cursor: pointer;
  padding: 4px 8px;
}

.scroll-area {
  padding: 4px 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ---- cards ---- */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.card-label {
  margin: 0 0 8px;
  color: var(--text-dim);
  font-size: 14px;
}

.pl-figure {
  margin: 0 0 10px;
  font-size: 34px;
  font-weight: 800;
  color: var(--text-dim);
}
.pl-figure.positive { color: var(--green); }
.pl-figure.negative { color: var(--text); }

.fun-line {
  margin: 0 0 12px;
  font-size: 15px;
  color: var(--text);
}

.bento-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 26px;
  min-height: 0;
}

.roi-figure {
  margin: 0 0 14px;
  font-size: 40px;
  font-weight: 800;
  color: var(--red);
}
.roi-figure.positive { color: var(--green); }
.roi-pct { font-size: 22px; font-weight: 700; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.stat-label {
  margin: 0 0 4px;
  font-size: 12px;
  color: var(--text-dim);
}
.stat-value {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.burger-box {
  margin-top: 16px;
  padding: 14px;
  background: var(--gray-bg);
  border-radius: 12px;
}
#burger-line {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.5;
}
.burger-stack {
  display: flex;
  flex-direction: column-reverse;
  gap: 2px;
  align-items: center;
}
.burger-layer { font-size: 22px; line-height: 1; }

.jackpot-card {
  border: 2px solid var(--green);
  text-align: center;
}
.jackpot-card .card-label { text-align: left; }
.jackpot-emoji { font-size: 36px; margin: 4px 0 8px; }
.jackpot-caption { margin: 0; color: var(--text-dim); font-size: 15px; }
.jackpot-win .jackpot-caption { color: var(--text); font-size: 16px; margin-bottom: 6px; }
.jackpot-amount {
  margin: 0;
  font-size: 40px;
  font-weight: 800;
  color: var(--green);
}
.jackpot-amount .prefix { font-size: 20px; font-weight: 700; margin-right: 4px; }

/* ---- records list ---- */
.record-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.record-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 16px;
}

.record-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.record-icon.win { background: var(--green-bg); }
.record-icon.lose { background: var(--gray-bg); }

.record-main { flex: 1; min-width: 0; }
.record-price { margin: 0; font-size: 18px; font-weight: 800; }
.record-date { margin: 2px 0 0; font-size: 13px; color: var(--text-dim); }
.record-card { margin: 2px 0 0; font-size: 12px; color: var(--text-dim); }

.record-diff { font-size: 15px; font-weight: 700; color: var(--text-dim); white-space: nowrap; }
.record-diff.positive { color: var(--green); }
.record-diff.negative { color: var(--red); }

.record-delete {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.record-delete:hover { color: var(--red); background: var(--gray-bg); }
.delete-icon { width: 18px; height: 18px; }

.empty-state {
  text-align: center;
  color: var(--text-dim);
  margin-top: 60px;
  font-size: 15px;
}
.empty-state.hidden { display: none; }

/* ---- bottom nav ---- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 480px;
  background: #ffffffee;
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 10px 24px calc(10px + env(safe-area-inset-bottom));
  z-index: 20;
}

.nav-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-btn.active { color: var(--text); }
.nav-icon { width: 26px; height: 26px; }

.nav-fab {
  background: var(--text);
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  font-size: 26px;
  font-weight: 400;
  line-height: 1;
}

/* ---- modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: flex-end;
  z-index: 50;
}
.modal-overlay.hidden { display: none; }

.modal-sheet {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  background: #fff;
  border-radius: 22px 22px 0 0;
  max-height: 92vh;
  overflow-y: auto;
  padding-bottom: env(safe-area-inset-bottom);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: #fff;
}
.modal-title { margin: 0; font-size: 17px; font-weight: 700; }
.modal-text-btn {
  border: none;
  background: none;
  font-size: 16px;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px 6px;
}
.modal-confirm { color: var(--text); font-weight: 700; }
.modal-confirm:disabled { color: #c7c7cc; cursor: default; }

.modal-body { padding: 20px 20px 32px; }

.section-label { font-size: 20px; font-weight: 800; margin: 0 0 14px; }
.modal-body .section-label:not(:first-child) { margin-top: 28px; }

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.price-btn {
  background: var(--gray-bg);
  border: 2px solid transparent;
  border-radius: 12px;
  padding: 16px 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-dim);
  cursor: pointer;
}
.price-btn.active {
  background: #1a1a1a;
  color: #fff;
  border-color: #1a1a1a;
}

.segmented {
  display: flex;
  background: var(--gray-bg);
  border-radius: 12px;
  padding: 4px;
  gap: 4px;
}
.segment {
  flex: 1;
  border: none;
  background: none;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dim);
  border-radius: 9px;
  cursor: pointer;
}
.segment.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.amount-field {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.amount-field.hidden { display: none; }
.amount-prefix { font-size: 17px; color: var(--text-dim); font-weight: 600; }
#amount-input {
  border: none;
  outline: none;
  font-size: 24px;
  font-weight: 700;
  flex: 1;
  text-align: right;
  font-family: inherit;
  color: #007aff;
  caret-color: #007aff;
}
#amount-input::placeholder { color: #c7c7cc; font-weight: 400; }

#ticket-code-input {
  border: none;
  outline: none;
  font-size: 24px;
  font-weight: 700;
  flex: 1;
  text-align: left;
  font-family: inherit;
  color: #007aff;
  caret-color: #007aff;
  width: 100%;
}
#ticket-code-input::placeholder { color: #c7c7cc; font-weight: 400; }

@media (prefers-color-scheme: dark) {
  html, body { background: #000; }
  :root {
    --bg: #000000;
    --card-bg: #1c1c1e;
    --text: #f5f5f5;
    --text-dim: #9a9a9e;
    --border: #2c2c2e;
    --green-bg: #113322;
    --gray-bg: #2c2c2e;
  }
  .bottom-nav { background: #1c1c1eee; }
  .modal-sheet { background: #1c1c1e; }
  .modal-header { background: #1c1c1e; }
  .price-btn.active { background: #f5f5f5; color: #000; border-color: #f5f5f5; }
  .segment.active { background: #3a3a3c; color: #fff; }
  #amount-input { color: #0a84ff; caret-color: #0a84ff; }
  #ticket-code-input { color: #0a84ff; caret-color: #0a84ff; }
}