:root {
  --bg: #0b0c10;
  --bg-2: #12141b;
  --card: #171a23;
  --card-2: #1e2230;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f4f1ea;
  --muted: #9aa3b5;
  --orange: #ff6a00;
  --orange-2: #ff8a33;
  --gold: #f0c36a;
  --good: #7dcea0;
  --warn: #e7b567;
  --bad: #e07a6a;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  font-family: "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); }
body {
  min-height: 100vh;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(255, 106, 0, 0.16), transparent 50%),
    radial-gradient(900px 400px at 100% 0%, rgba(240, 195, 106, 0.08), transparent 45%),
    var(--bg);
}

.app { max-width: 1280px; margin: 0 auto; padding: 28px 20px 60px; }
.top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 22px;
}
.brand { display: flex; gap: 16px; align-items: center; }
.logo {
  width: 92px; height: 92px; border-radius: 18px;
  object-fit: contain; background: #000;
  display: none; flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(255, 106, 0, 0.22);
}
.brand.has-logo .logo { display: block; }
.brand.has-logo .mark { display: none; }
.mark {
  width: 46px; height: 46px; border-radius: 14px;
  background: linear-gradient(160deg, var(--orange), #c94d00);
  display: grid; place-items: center; font-weight: 800; letter-spacing: 0.04em;
  box-shadow: 0 8px 24px rgba(255, 106, 0, 0.35);
}
h1 { margin: 0; font-size: 28px; letter-spacing: 0.04em; }
.sub { color: var(--muted); margin-top: 4px; font-size: 13px; }
.home-link {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  background: var(--card-2);
}
.home-link:hover { border-color: rgba(255,106,0,.45); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

button, .btn {
  appearance: none; border: 1px solid var(--line); background: var(--card-2);
  color: var(--text); border-radius: 12px; padding: 10px 14px; cursor: pointer;
  font-size: 14px;
}
button.primary { background: var(--orange); border-color: transparent; color: #111; font-weight: 700; }
input[readonly] { color: var(--muted); cursor: default; }
input.need { border-color: #e07a6a; box-shadow: 0 0 0 2px rgba(224,122,106,.25); }
.snap-big {
  width: 100%;
  margin: 0 0 8px;
  padding: 16px 18px;
  font-size: 20px;
  letter-spacing: 0.06em;
}
.snap-hint {
  margin: 0 0 16px;
  text-align: center;
  color: var(--warn);
  font-size: 15px;
}
button.ghost:hover, button:hover { border-color: rgba(255,106,0,0.45); }
button.primary:hover { filter: brightness(1.05); }

.grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
}
@media (max-width: 980px) { .grid { grid-template-columns: 1fr; } .top { flex-direction: column; align-items: flex-start; } }

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent 40%), var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.card h2 {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}
.fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.fields.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 720px) {
  .fields, .fields.four { grid-template-columns: 1fr 1fr; }
}

label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--muted); }
input, select {
  width: 100%; background: #0f1219; color: var(--text);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 11px; font-size: 14px;
}
input:focus, select:focus { outline: 2px solid rgba(255,106,0,0.35); border-color: var(--orange); }

.results {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.results.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 720px) { .results, .results.four { grid-template-columns: 1fr; } }
.banner {
  background: rgba(240, 195, 106, 0.12);
  border: 1px solid rgba(240, 195, 106, 0.28);
  color: #f0d9a0;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.55;
  margin-bottom: 18px;
}
.notation {
  font-size: 28px;
  font-weight: 800;
  color: var(--orange-2);
  letter-spacing: 0.04em;
  margin: 0 0 14px;
}
.ladder { display: grid; gap: 8px; }
.ladder .item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  padding: 10px 12px;
  background: var(--card-2);
  border-radius: 12px;
  border: 1px solid var(--line);
  font-size: 13px;
}
.ladder .n { font-weight: 800; color: var(--orange-2); font-size: 18px; }
.ladder .t { color: var(--text); font-weight: 650; }
.ladder .s { color: var(--muted); margin-top: 4px; line-height: 1.45; }
.result {
  background: var(--card-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 14px 14px;
  min-height: 120px;
}
.result .k { font-size: 12px; color: var(--muted); letter-spacing: 0.08em; }
.result .v {
  font-size: 34px; font-weight: 800; margin-top: 8px; color: var(--orange-2);
  font-variant-numeric: tabular-nums;
}
.result .d { color: var(--gold); font-size: 13px; margin-top: 4px; }
.result.error .v { color: var(--bad); font-size: 22px; }

.warn {
  border-radius: 12px;
  padding: 12px 14px;
  background: rgba(224, 122, 106, 0.12);
  color: #f3c2ba;
  border: 1px solid rgba(224, 122, 106, 0.28);
  font-size: 13px;
  display: none;
  margin-bottom: 14px;
}
.warn.show { display: block; }

.diagram {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 14px;
  align-items: center;
  margin-top: 8px;
}
.diagram.wide { grid-template-columns: 240px 1fr; align-items: start; }
@media (max-width: 720px) { .diagram, .diagram.wide { grid-template-columns: 1fr; } }
svg.ball { width: 180px; height: 180px; }
.diagram.wide svg.ball { width: 240px; height: 240px; }
.meta { font-size: 13px; color: var(--muted); line-height: 1.55; }
.meta b { color: var(--text); font-weight: 650; }
.h3 { margin: 16px 0 6px; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); }
.cap { font-size: 12px; color: var(--muted); margin: 0 0 8px; line-height: 1.45; }
.why { margin: 0; padding-left: 18px; color: var(--text); font-size: 13px; line-height: 1.55; }
.warn.show { display: grid; gap: 6px; }

.breakdown { display: grid; gap: 8px; margin-top: 14px; }
.row { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; font-size: 13px; color: var(--muted); }
.row b { color: var(--text); }
.bar {
  height: 6px; border-radius: 99px; background: #2a3142; overflow: hidden; grid-column: 1 / -1;
}
.bar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--orange), var(--gold)); }

.studio {
  text-align: center;
  margin: 56px 0 12px;
  padding: 40px 16px 28px;
  border-top: 1px solid var(--line);
}
.studio-name {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: 0.14em;
  line-height: 1.3;
}
.studio-en {
  margin-top: 10px;
  font-size: 22px;
  color: var(--gold);
  letter-spacing: 0.22em;
}
.studio a {
  display: block;
  margin-top: 12px;
  font-size: 20px;
  color: var(--orange-2);
  word-break: break-all;
}
.studio-club {
  margin-top: 28px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.profiles { display: flex; gap: 8px; align-items: end; }
.profiles select { min-width: 180px; }

@media print {
  body { background: white; color: #111; }
  .actions, .profiles { display: none !important; }
  .card, .result { box-shadow: none; background: white; color: #111; border-color: #ddd; }
  .result .v { color: #111; }
  h1, h2, .k, .sub, label { color: #333 !important; }
}