:root {
  color-scheme: light dark;
  --bg: #12131a;
  --panel: #1c1e29;
  --border: #333648;
  --accent: #7aa2ff;
  --text: #e8e9ef;
  --muted: #8a8d9f;
  --notice: #ff6b6b;
}

* { box-sizing: border-box; }

html { font-size: 17px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.dpx-topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 32px;
  font-size: 0.9rem;
  color: var(--muted);
  background: #0b0c11;
  border-bottom: 1px solid var(--border);
}
.dpx-topbar img { border-radius: 4px; width: 26px; height: 26px; }
.dpx-topbar a { color: var(--muted); text-decoration: none; }
.dpx-topbar a:hover { color: var(--accent); }
.dpx-topbar .dpx-version { color: var(--accent); font-weight: 600; }
.dpx-topbar .dpx-git { font-family: ui-monospace, "SF Mono", Menlo, monospace; }

/* demo-only additions */
.dpx-topbar .demo-badge {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--notice);
  border: 1px solid var(--notice);
  border-radius: 999px;
  padding: 2px 10px;
}
.dpx-topbar .demo-reset-btn {
  font: inherit;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 12px;
  cursor: pointer;
}
.dpx-topbar .demo-reset-btn:hover { border-color: var(--accent); color: var(--accent); }

main { padding: 32px; }

h1 { margin-top: 0; font-size: 1.4rem; }
a { color: var(--accent); }

/* index page: page cards with real thumbnails */
.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 22px;
  margin-top: 22px;
}

.page-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  text-decoration: none;
  color: var(--text);
}

.page-card:hover { border-color: var(--accent); }

.thumb-deck {
  display: grid;
  gap: 2px;
  margin-bottom: 10px;
  overflow: hidden;
  border-radius: 8px;
}

.thumb-btn img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.page-card-label {
  font-size: 1rem;
  color: var(--text);
}

/* page view: frame with side panel + centered deck */
.frame {
  display: grid;
  grid-template-columns: 340px auto;
  gap: 40px;
  align-items: start;
  max-width: 1500px;
  margin: 22px auto 0;
}

.side-panel {
  position: sticky;
  top: 32px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  min-height: 200px;
}

.empty-hint { color: var(--muted); font-size: 0.95rem; line-height: 1.5; }
.side-panel .loc { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 10px; }
.side-panel .heading { font-weight: 700; font-size: 1.2rem; margin-bottom: 8px; }
.side-panel .body-text { font-size: 1rem; line-height: 1.45; margin-bottom: 10px; white-space: pre-wrap; }
.side-panel .notice { color: var(--notice); font-weight: 600; font-size: 1rem; margin-bottom: 10px; }
.side-panel .note { font-style: italic; color: var(--muted); font-size: 0.9rem; }
.side-panel .command {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.85rem;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 8px 10px;
  margin-top: 10px;
  white-space: pre-wrap;
}

/* demo edit form */
.side-panel label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.side-panel label textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  font: inherit;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  resize: vertical;
}
.edit-actions { display: flex; gap: 10px; margin-top: 4px; }
.edit-actions button {
  font: inherit;
  font-size: 0.9rem;
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  border: 1px solid var(--border);
}
.edit-actions .save-btn { background: var(--accent); color: #0b0c11; border-color: var(--accent); font-weight: 600; }
.edit-actions .cancel-btn { background: transparent; color: var(--muted); }

.deck-wrap { display: flex; justify-content: center; }

.deck {
  display: grid;
  gap: 6px;
  width: fit-content;
}

.deck .btn {
  position: relative;
  width: 96px;
  height: 96px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
  cursor: pointer;
}

.deck .btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.deck .btn .label-override {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.1;
  color: #fff;
  background: rgba(0, 0, 0, 0.78);
  word-break: break-word;
}

.deck .btn.has-notice { box-shadow: 0 0 0 3px var(--notice); }