:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1c2733;
  --muted: #6b7785;
  --brand: #0f5c4d;
  --brand-dark: #0a4237;
  --brand-soft: #e3f2ee;
  --line: #e3e8ee;
  --danger: #c0392b;
  --warn-bg: #fff6e5;
  --warn-line: #f0d9a8;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(20, 40, 60, 0.08), 0 6px 18px rgba(20, 40, 60, 0.05);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  font-size: 15px;
}

.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }

/* header */
header {
  background: linear-gradient(135deg, var(--brand), #0f7a66 60%, #1a8f72);
  color: #fff;
  padding: 20px 0 18px;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 34px; }
.brand h1 { margin: 0; font-size: 22px; letter-spacing: 0.5px; }
.brand p { margin: 2px 0 0; opacity: 0.85; font-size: 12.5px; }

.pill {
  font-size: 12.5px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

/* disclaimer */
.disclaimer {
  margin-top: 14px;
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  color: #7a5b12;
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 13px;
}

/* tabs */
.tabs {
  display: flex;
  gap: 6px;
  margin: 18px auto 14px;
  flex-wrap: wrap;
}
.tab {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 18px;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  transition: all 0.15s;
}
.tab:hover { border-color: var(--brand); color: var(--brand); }
.tab.active { background: var(--brand); border-color: var(--brand); color: #fff; }

.sec { display: none; animation: fade 0.2s ease; }
.sec.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }

/* cards */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  margin-bottom: 18px;
}
.card h2 { margin: 0 0 6px; font-size: 18px; }
.card h3 { margin: 16px 0 8px; font-size: 15px; }
.hint { color: var(--muted); font-size: 13.5px; margin: 4px 0 12px; }

.meta-line { color: var(--muted); font-size: 13.5px; }
.meta-line b { color: var(--brand-dark); }

/* layout helpers */
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 10px 0; }
.row.between { justify-content: space-between; }
.spacer { flex: 1; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 640px) { .grid2 { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 6px; font-size: 13.5px; color: var(--muted); }
.field.inline { flex-direction: row; align-items: center; gap: 8px; }
.field input[type="number"],
.field input[type="text"] {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  width: 100%;
  color: var(--ink);
  background: #fbfcfd;
}
.field.inline input[type="number"] { width: 90px; }
.field input[type="text"]:disabled { background: #eef1f4; color: #9aa4af; }

.radio { display: flex; align-items: center; gap: 6px; font-size: 13.5px; color: var(--ink); font-weight: normal; cursor: pointer; }

label.field > span, .field label { font-weight: 600; }

select {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
  color: var(--ink);
}

/* buttons */
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  font: inherit;
  font-size: 14px;
  padding: 9px 16px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
  transition: all 0.15s;
}
.btn:hover { border-color: var(--brand); color: var(--brand); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-dark); color: #fff; }
.btn.danger { color: var(--danger); border-color: #ecc7c2; }
.btn.danger:hover { background: #fdf0ee; color: var(--danger); }
.btn.small { padding: 3px 9px; font-size: 12.5px; border-radius: 8px; }

.status { font-size: 13px; color: var(--muted); }
.status.loading { color: var(--brand); }

/* number balls */
.ball {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  background: #2c3e50;
  margin: 1px 2px;
}
.ball.special { box-shadow: 0 0 0 2px #fff, 0 0 0 4px #e8a400; background: #b8860b; }
.ball.b0 { background: #c0392b; }
.ball.b1 { background: #e67e22; }
.ball.b2 { background: #16a085; }
.ball.b3 { background: #2471a3; }
.ball.b4 { background: #6c3483; }
.ball.sm { width: 24px; height: 24px; font-size: 11.5px; }

/* tables */
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin-top: 10px; }
.table th, .table td { padding: 7px 8px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table th { background: #f7faf9; color: var(--muted); font-weight: 600; font-size: 12.5px; white-space: nowrap; }
.table tr:last-child td { border-bottom: none; }
.table .num { text-align: center; }
.table tbody tr:hover { background: #fafcfb; }
.td-balls { white-space: nowrap; }

.badge {
  display: inline-block;
  background: var(--brand-soft);
  color: var(--brand-dark);
  border-radius: 6px;
  padding: 1px 8px;
  font-size: 12px;
}

.summary-box {
  background: var(--brand-soft);
  border-radius: 10px;
  padding: 10px 14px;
  margin: 10px 0;
  font-size: 13.5px;
}
.summary-box b { color: var(--brand-dark); }
.summary-box.warn { background: var(--warn-bg); border: 1px solid var(--warn-line); }
.summary-box.warn b { color: #8a6110; }
.summary-box .big { font-size: 16px; }

.empty { color: var(--muted); font-size: 13.5px; padding: 14px 0 4px; text-align: center; }
.divider { border: none; border-top: 1px dashed var(--line); margin: 12px 0; }

.batch-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.batch-head .meta { color: var(--muted); font-size: 12.5px; }

/* draw card */
.draw-meta { color: var(--muted); font-size: 13px; margin: 6px 0 2px; }
.draw-balls { margin: 8px 0 4px; display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.label-special { font-size: 12px; color: var(--muted); margin-left: 6px; }
.draw-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

.manual-form {
  margin-top: 14px;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}
.manual-form details { margin-top: 8px; }
.manual-form summary { cursor: pointer; color: var(--brand); font-size: 13.5px; }
.manual-fields { display: grid; grid-template-columns: 130px 200px 1fr; gap: 10px; margin-top: 10px; }
@media (max-width: 640px) { .manual-fields { grid-template-columns: 1fr; } }

/* result boxes */
.panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 4px 14px 14px;
  margin-top: 12px;
  background: #fdfdfe;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 24px 16px 40px;
}