:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2e39;
  --text: #e6e8ef;
  --muted: #9aa1b2;
  --accent: #4f8cff;
  --accent-soft: rgba(79, 140, 255, 0.15);
  --danger: #ff6b6b;
  --success: #43c17b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans TC", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 24px;
  border-top: 1px solid var(--border);
}

h1 { margin-top: 0; text-align: center; }

/* 上傳表單 */
.predict-form {
  margin: 24px auto 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 480px;
  text-align: center;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: center;
}

.field label {
  color: var(--muted);
  font-size: 0.9rem;
}

.field select {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 1rem;
}

.file-upload-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  cursor: pointer;
  text-align: center;
  color: var(--text);
  font-size: 1rem;
}

.file-upload-btn:hover { border-color: var(--accent); }

.file-upload-btn input { display: none; }

.predict-form button {
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font-size: 1rem;
  cursor: pointer;
}

.predict-form button:hover { opacity: 0.9; }

/* Flash 訊息 */
.flash-list { margin-bottom: 16px; }

.flash {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.flash-error { background: rgba(255, 107, 107, 0.15); color: var(--danger); }
.flash-success { background: rgba(67, 193, 123, 0.15); color: var(--success); }

/* 結果頁 */
.result-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

@media (max-width: 720px) {
  .result-layout { grid-template-columns: 1fr; }
}

.result-image img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.pred-summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.pred-label {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
}

.pred-conf { color: var(--muted); }

.prob-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.prob-table th {
  text-align: left;
  color: var(--muted);
  font-weight: 500;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.prob-table td {
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
}

.prob-table tr.is-top td:first-child { color: var(--accent); font-weight: 600; }

.bar-cell { width: 45%; }

.bar-track {
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
}