:root {
  --bg: #0b0d14;
  --bg2: #10131f;
  --card: rgba(20, 24, 38, 0.72);
  --card-solid: #151a2b;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e9ecf5;
  --muted: #8b93a9;
  --accent: #6d5cff;
  --accent2: #e94fff;
  --good: #34d399;
  --bad: #f87171;
  --warn: #fbbf24;
  --radius: 16px;
  --font: "Inter", -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.55;
}

/* ---------- ambient orbs ---------- */
.bg-orbs { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(110px); opacity: 0.5; }
.orb-a { width: 480px; height: 480px; background: #4f3dff; top: -140px; left: -100px; }
.orb-b { width: 420px; height: 420px; background: #b11fff; bottom: -160px; right: -80px; }
.orb-c { width: 320px; height: 320px; background: #00c2d7; top: 40%; left: 55%; opacity: 0.28; }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 22px;
  padding: 14px 28px;
  background: rgba(11, 13, 20, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  font-weight: 800; font-size: 15px; letter-spacing: 0.5px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 4px 24px rgba(109, 92, 255, 0.45);
}
.brand-name { font-weight: 800; font-size: 16px; }
.brand-sub { font-size: 11.5px; color: var(--muted); }

.tabs { display: flex; gap: 4px; margin: 0 auto; background: rgba(255,255,255,0.04); padding: 4px; border-radius: 999px; border: 1px solid var(--border); }
.tab {
  border: 0; cursor: pointer; font: inherit; font-size: 13.5px; font-weight: 600;
  color: var(--muted); background: transparent; padding: 8px 16px; border-radius: 999px;
  transition: all 0.18s ease;
}
.tab:hover { color: var(--text); }
.tab.active { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; box-shadow: 0 4px 18px rgba(109,92,255,0.4); }

.top-right { display: flex; align-items: center; gap: 10px; }
.build-badge {
  font-size: 11px; color: var(--muted); border: 1px solid var(--border);
  padding: 3px 10px; border-radius: 999px; font-family: var(--mono);
}

/* ---------- layout ---------- */
.container { position: relative; z-index: 1; max-width: 1280px; margin: 0 auto; padding: 26px 28px 60px; }
.panel { display: none; }
.panel.active { display: block; animation: fadeUp 0.35s ease; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.studio-grid { display: grid; grid-template-columns: 460px 1fr; gap: 20px; align-items: start; }
.api-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; backdrop-filter: blur(10px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
}
.card-title {
  display: flex; align-items: center; justify-content: space-between;
  font-weight: 700; font-size: 14px; margin-bottom: 12px;
}
.hint { font-size: 12px; color: var(--muted); font-weight: 500; }
.muted { color: var(--muted); font-size: 13px; }

/* ---------- model picker ---------- */
.model-groups { display: flex; flex-direction: column; gap: 10px; max-height: 268px; overflow-y: auto; padding-right: 4px; }
.model-groups::-webkit-scrollbar { width: 6px; }
.model-groups::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
.model-group-label { font-size: 11px; font-weight: 700; letter-spacing: 0.8px; color: var(--muted); text-transform: uppercase; margin-bottom: 6px; }
.model-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.model-chip {
  cursor: pointer; font: inherit; font-size: 12.5px; font-weight: 600;
  padding: 7px 12px; border-radius: 999px; color: var(--text);
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  transition: all 0.16s ease;
}
.model-chip:hover { border-color: var(--accent); transform: translateY(-1px); }
.model-chip.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: transparent; box-shadow: 0 4px 16px rgba(109,92,255,0.4);
}

/* ---------- prompt ---------- */
.prompt-box { border: 1px solid var(--border); border-radius: 12px; background: rgba(0,0,0,0.25); transition: border-color 0.18s; }
.prompt-box:focus-within { border-color: var(--accent); }
textarea {
  width: 100%; font: inherit; font-size: 14px; color: var(--text);
  background: transparent; border: 0; outline: none; resize: vertical;
  padding: 12px 14px 6px; min-height: 74px;
}
textarea::placeholder { color: #5d6478; }
.prompt-bar { display: flex; align-items: center; justify-content: space-between; padding: 6px 12px 10px; gap: 10px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.chip {
  cursor: pointer; border: 1px solid var(--border); background: rgba(255,255,255,0.04);
  color: var(--muted); font: inherit; font-size: 11.5px; padding: 4px 10px; border-radius: 999px;
  transition: all 0.15s ease;
}
.chip:hover { color: var(--text); border-color: var(--accent); }

/* ---------- ratios ---------- */
.ratio-row { display: flex; gap: 6px; flex-wrap: wrap; }
.ratio-btn {
  cursor: pointer; font: inherit; font-size: 12.5px; font-weight: 600;
  padding: 8px 14px; border-radius: 10px; color: var(--text);
  background: rgba(255,255,255,0.05); border: 1px solid var(--border); transition: all 0.15s ease;
}
.ratio-btn:hover { border-color: var(--accent); }
.ratio-btn.active { background: linear-gradient(135deg, var(--accent), var(--accent2)); border-color: transparent; }

/* ---------- advanced ---------- */
.advanced { margin-top: 16px; border-top: 1px dashed var(--border); padding-top: 12px; }
.advanced summary { cursor: pointer; font-size: 13px; font-weight: 600; color: var(--muted); user-select: none; }
.advanced summary:hover { color: var(--text); }
.adv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label, .adv-grid label { font-size: 12px; color: var(--muted); font-weight: 600; display: flex; flex-direction: column; gap: 6px; }
input[type="text"], input[type="password"], select {
  font: inherit; font-size: 13.5px; color: var(--text);
  background: rgba(0,0,0,0.28); border: 1px solid var(--border);
  border-radius: 10px; padding: 9px 12px; outline: none; transition: border-color 0.15s;
  width: 100%;
}
input:focus, select:focus { border-color: var(--accent); }

/* ---------- buttons ---------- */
.btn-generate {
  margin-top: 18px; width: 100%; cursor: pointer; font: inherit;
  font-size: 15px; font-weight: 700; color: #fff;
  padding: 13px; border: 0; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 8px 28px rgba(109,92,255,0.4);
  display: flex; align-items: center; justify-content: center; gap: 10px;
  transition: all 0.18s ease;
}
.btn-generate:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 12px 34px rgba(109,92,255,0.55); }
.btn-generate:disabled { opacity: 0.6; cursor: not-allowed; }
.btn {
  display: inline-flex; align-items: center; gap: 6px; justify-content: center;
  font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; text-decoration: none;
  padding: 9px 16px; border-radius: 10px; border: 1px solid var(--border);
  transition: all 0.15s ease; white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; border-color: transparent; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-secondary { background: rgba(255,255,255,0.07); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--text); border-color: var(--border-strong); }
.btn-danger { background: rgba(248,113,113,0.12); color: var(--bad); border-color: rgba(248,113,113,0.3); }
.btn-danger:hover { background: rgba(248,113,113,0.22); }
.btn-sm { padding: 5px 11px; font-size: 12px; border-radius: 8px; }
.row { display: flex; gap: 8px; align-items: center; }
.row > input { flex: 1; }

/* ---------- status ---------- */
.status { margin-top: 12px; font-size: 13px; color: var(--muted); min-height: 18px; white-space: pre-wrap; word-break: break-word; }
.status.ok { color: var(--good); }
.status.err { color: var(--bad); }
.status.warn { color: var(--warn); }

.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.35); border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hidden { display: none !important; }

/* ---------- result preview ---------- */
.preview {
  border-radius: 12px; min-height: 420px; display: grid; place-items: center;
  background: rgba(0,0,0,0.3); border: 1px dashed var(--border);
  overflow: hidden; position: relative; transition: border-color 0.2s;
}
.preview:not(.empty) { border-style: solid; border-color: var(--border-strong); }
.preview img, .preview video { width: 100%; height: 100%; max-height: 520px; object-fit: contain; border-radius: 12px; }
.preview-placeholder { text-align: center; color: var(--muted); padding: 20px; }
.ph-icon { font-size: 44px; margin-bottom: 10px; filter: grayscale(0.3); }
.preview.loading::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, transparent 30%, rgba(255,255,255,0.07) 50%, transparent 70%);
  background-size: 200% 100%; animation: shimmer 1.4s infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }

.result-actions { display: flex; gap: 8px; margin-top: 12px; justify-content: flex-end; }

/* ---------- engines ---------- */
.engine-cards { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.engine-card {
  cursor: pointer; border: 1px solid var(--border); border-radius: 12px; padding: 14px;
  background: rgba(255,255,255,0.04); position: relative; transition: all 0.16s ease; display: block;
}
.engine-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.engine-card.active { border-color: var(--accent); background: rgba(109,92,255,0.12); box-shadow: 0 6px 22px rgba(109,92,255,0.3); }
.engine-name { font-weight: 700; font-size: 14px; }
.engine-desc { font-size: 11.5px; color: var(--muted); margin-top: 4px; line-height: 1.4; }
.engine-badge {
  position: absolute; top: 8px; right: 8px; font-size: 10px; font-weight: 700;
  color: var(--accent2); border: 1px solid var(--accent2); border-radius: 999px; padding: 1px 8px;
}
.engine-badge.warn { position: static; color: var(--warn); border-color: var(--warn); margin-left: 4px; }
.engine-card.disabled {
  cursor: not-allowed; opacity: 0.45; filter: grayscale(0.4);
  border-style: dashed; background: rgba(255,255,255,0.02);
}
.engine-card.disabled:hover { border-color: var(--warn); transform: none; }

/* ---------- job panel ---------- */
.job-panel { margin-bottom: 14px; padding: 14px; border: 1px solid var(--border); border-radius: 12px; background: rgba(0,0,0,0.25); }

/* ---------- job list（持久化任務追蹤） ---------- */
.job-list { display: flex; flex-direction: column; gap: 10px; max-height: 340px; overflow-y: auto; padding-right: 4px; }
.job-list::-webkit-scrollbar { width: 6px; }
.job-list::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
.job-item {
  border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px;
  background: rgba(255,255,255,0.03); transition: border-color 0.16s ease;
}
.job-item.active { border-color: var(--accent); background: rgba(109,92,255,0.07); }
.job-item-top { display: flex; align-items: center; gap: 8px; }
.job-item-top b { font-size: 13.5px; }
.job-badge {
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.3px;
  color: var(--accent2); border: 1px solid var(--accent2); border-radius: 999px;
  padding: 1px 9px; margin-left: auto;
}
.job-badge.done { color: var(--good); border-color: var(--good); }
.job-badge.err { color: var(--bad); border-color: var(--bad); }
.job-item-prompt {
  font-size: 12.5px; color: var(--text); margin-top: 6px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.job-item-meta { font-size: 11.5px; color: var(--muted); margin-top: 6px; }
.job-item-actions { display: flex; gap: 8px; margin-top: 10px; }
.job-row { display: flex; gap: 16px; font-size: 13px; flex-wrap: wrap; }
.job-row span { color: var(--muted); }
.job-row b { color: var(--text); font-family: var(--mono); font-weight: 500; }
.progress { margin-top: 12px; height: 8px; background: rgba(255,255,255,0.07); border-radius: 99px; overflow: hidden; }
.progress-bar {
  height: 100%; width: 0%; border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 0.5s ease;
}

/* ---------- API ---------- */
.key-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.key-item {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px;
  background: rgba(255,255,255,0.03);
}
.key-meta { min-width: 0; }
.key-meta .t { font-size: 13px; font-weight: 600; }
.key-meta .p { font-size: 11.5px; color: var(--muted); font-family: var(--mono); word-break: break-all; }
.code {
  background: #0a0c13; border: 1px solid var(--border); border-radius: 12px;
  padding: 14px; font-family: var(--mono); font-size: 12.5px; line-height: 1.7;
  overflow-x: auto; color: #b7c1dd; white-space: pre;
}

/* ---------- gallery ---------- */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.gallery-grid img, .gallery-grid video { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 12px; border: 1px solid var(--border); transition: transform 0.18s ease; }
.gallery-grid a:hover img, .gallery-grid a:hover video { transform: scale(1.03); }

/* ---------- toast ---------- */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--card-solid); color: var(--text); font-size: 13.5px; font-weight: 600;
  padding: 11px 20px; border-radius: 12px; border: 1px solid var(--border-strong);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5); opacity: 0; transition: all 0.3s ease; z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok { border-color: var(--good); } .toast.err { border-color: var(--bad); }

.foot { position: relative; z-index: 1; text-align: center; padding: 22px; color: var(--muted); font-size: 12.5px; }
.foot a { color: var(--accent2); text-decoration: none; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .studio-grid, .api-grid { grid-template-columns: 1fr; }
  .engine-cards { grid-template-columns: 1fr; }
  .tabs { margin: 0; order: 3; width: 100%; overflow-x: auto; }
  .topbar { flex-wrap: wrap; }
}