:root {
  --bg: #0b0d12;
  --panel: #141821;
  --panel-2: #1b202b;
  --border: #262d3a;
  --text: #e6e9ef;
  --muted: #8b93a7;
  --accent: #4f8cff;
  --accent-2: #ff5ea8;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", Helvetica, Arial, sans-serif;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ---- header ---- */
.site-header {
  padding: 24px 28px 18px;
  border-bottom: 1px solid var(--border);
}
.site-header h1 { margin: 0; font-size: 22px; letter-spacing: .5px; }
.tagline { margin: 4px 0 0; color: var(--muted); font-size: 13px; }

/* ---- layout ---- */
.layout { display: flex; flex: 1; min-height: 0; }

.sidebar {
  width: 240px;
  flex: 0 0 240px;
  border-right: 1px solid var(--border);
  padding: 18px 12px;
}
.sidebar-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
  margin: 0 8px 10px;
}
.task-list { display: flex; flex-direction: column; gap: 2px; }
.task-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}
.task-link:hover { background: var(--panel); }
.task-link.active { background: var(--panel-2); box-shadow: inset 2px 0 0 var(--accent); }
.task-link-meta { font-size: 11px; color: var(--muted); }

/* ---- main ---- */
.main { flex: 1; padding: 24px 28px; min-width: 0; }

.task-header { margin-bottom: 18px; }
.task-title { margin: 0 0 6px; font-size: 20px; }
.task-desc { margin: 0 0 10px; color: var(--muted); font-size: 14px; max-width: 70ch; }
.prompt-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  max-width: 80ch;
}
.prompt-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.prompt-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
}
.copy-btn {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  cursor: pointer;
}
.copy-btn:hover { background: var(--border); }
.copy-btn:disabled { opacity: .7; cursor: default; }
.prompt-text {
  margin: 0;
  max-height: 320px;
  overflow: auto;
  white-space: pre-wrap;
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.prompt-text code {
  font-family: inherit;
  white-space: pre-wrap;
}

.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 7px 14px;
  border-radius: 7px;
  font-size: 13px;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.toolbar-note { font-size: 12px; color: var(--muted); }

/* ---- grid of submissions ---- */
.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.model { font-size: 14px; font-weight: 600; }
.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--muted);
  border: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.provider { color: #c4cad8; }
.badge.effort {
  color: #fff;
  border-color: transparent;
  font-weight: 700;
}
.effort-low { background: #2f855a; }
.effort-medium { background: #2563eb; }
.effort-high { background: #d97706; }
.effort-xhigh { background: #dc2626; }
.effort-ultracode { background: #7c3aed; }
.effort-max {
  color: #111827;
  background: linear-gradient(90deg, #ff4d4d, #f59e0b, #facc15, #22c55e, #38bdf8, #6366f1, #d946ef);
  border-color: rgba(255, 255, 255, .35);
}

/* client badge：已知 client 給專屬色，未知值沿用預設 badge 樣式 */
.badge.client { text-transform: none; letter-spacing: 0; }
.client-claude-code { color: #e08760; border-color: #5c3a2e; }
.client-codex { color: #10a37f; border-color: #155e4b; }
.client-opencode { color: #eab308; border-color: #6b5a14; }
.client-cursor { color: #a78bfa; border-color: #443a6b; }
.client-kiro { color: #38bdf8; border-color: #1e4b63; }
.client-api { color: #94a3b8; }

.submission-byline {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.generated-at {
  font-variant-numeric: tabular-nums;
}
.author {
  color: var(--muted);
  text-decoration: none;
}
.author:hover { color: var(--text); text-decoration: underline; }

/* metrics footer：時間 / in / out / cost 四格 */
.card-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}
.metric { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.metric-k {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--muted);
}
.metric-v {
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-body {
  position: relative;
  aspect-ratio: 16 / 10;
  background: #000;
  overflow: hidden;
}
.card-body iframe,
.card-body img,
.card-body video,
.card-body model-viewer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}
.card-body img,
.card-body video,
.card-body model-viewer { object-fit: contain; background: #000; }

/* ---- click-to-load placeholder ---- */
.placeholder {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(135deg, #161b25, #0f131b);
  color: var(--text);
  cursor: pointer;
}
.placeholder:hover { background: linear-gradient(135deg, #1b2230, #12161f); }
.placeholder .play {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  padding-left: 3px;
}
.ph-text { font-size: 14px; }
.ph-sub { font-size: 12px; color: var(--muted); }

.frame-bar {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 2;
  display: flex;
  gap: 6px;
}
.frame-btn {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(0, 0, 0, .55);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .15);
  text-decoration: none;
  cursor: pointer;
}
.frame-btn:hover { background: rgba(0, 0, 0, .78); }

/* ---- misc ---- */
.error-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  max-width: 70ch;
}
.error-box h2 { margin: 0 0 8px; font-size: 16px; color: var(--accent-2); }
.error-box p { margin: 0; color: var(--muted); font-size: 14px; }
.error-box code { color: var(--text); }
.muted { color: var(--muted); }

@media (max-width: 720px) {
  .layout { flex-direction: column; }
  .sidebar {
    width: auto;
    flex: none;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .task-list { flex-direction: row; flex-wrap: wrap; }
  .task-link { flex: 1 1 auto; }
}