:root {
  --bg: #f4f2ee;
  --panel: #ffffff;
  --ink: #262421;
  --muted: #8a847a;
  --line: #e3ddd3;
  --accent: #b08a5a;
  --accent-ink: #ffffff;
  --code-bg: #efe9df;
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
}

body[dir="rtl"] { direction: rtl; }

a { color: inherit; }

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

header.site .brand {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  text-decoration: none;
}

header.site .actions { display: flex; gap: 10px; align-items: center; }

.btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.btn:hover { filter: brightness(0.97); }

main { max-width: 1500px; margin: 0 auto; padding: 24px; }

/* Catalog grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.card:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.06); }

.card .thumb {
  aspect-ratio: 1 / 1;
  background: var(--code-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--muted);
}

.card .thumb img, .card .thumb svg { width: 100%; height: 100%; object-fit: contain; }

.card .code-tag {
  padding: 10px 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.card .title { padding: 0 12px 12px; color: var(--muted); font-size: 0.85rem; }

/* Design viewer page */
.viewer-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .viewer-layout { grid-template-columns: 1fr; }
}

.stage {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.tabs { display: flex; border-bottom: 1px solid var(--line); }

.tab-btn {
  flex: 1;
  padding: 12px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--muted);
  border-bottom: 2px solid transparent;
}

.tab-btn.active { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }

.stage-body { position: relative; height: 58vh; min-height: 440px; max-height: 620px; background: #eae6dd; }

#view-3d, #view-2d { position: absolute; inset: 0; overflow: hidden; }
#view-2d { display: none; touch-action: none; cursor: grab; }
#view-2d.grabbing { cursor: grabbing; }
#view-2d img, #view-2d svg { max-width: none; user-select: none; -webkit-user-drag: none; transform-origin: 0 0; position: absolute; top: 0; left: 0; }

.view-mode-toggle {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px;
  backdrop-filter: blur(4px);
}
body[dir="rtl"] .view-mode-toggle { left: auto; right: 12px; }

.view-mode-toggle button {
  border: none;
  background: none;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--muted);
  cursor: pointer;
}
.view-mode-toggle button.active { background: var(--accent); color: var(--accent-ink); }
.view-mode-toggle button:hover:not(.active) { background: var(--code-bg); }

.view-axis-toggle {
  position: absolute;
  bottom: 12px;
  left: 12px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px;
  backdrop-filter: blur(4px);
}
body[dir="rtl"] .view-axis-toggle { left: auto; right: 12px; }

.view-axis-toggle button {
  border: none;
  background: none;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  color: var(--muted);
  cursor: pointer;
}
.view-axis-toggle button:hover { background: var(--code-bg); }

.stage-hint {
  padding: 8px 12px;
  font-size: 0.78rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* Side dimensions panel */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.panel h3 { margin: 0 0 12px; font-size: 1.15rem; }

.dim-group-title {
  margin: 16px 0 4px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.dim-group-title:first-child { margin-top: 0; }

.dim-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  border-radius: 8px;
}

.dim-row .label { color: var(--muted); font-size: 0.95rem; }
.dim-row .value { font-weight: 700; font-size: 1.05rem; }

.code-title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.code-title .code { font-size: 1.8rem; font-weight: 800; letter-spacing: 0.02em; }
.code-title .title { color: var(--muted); font-size: 1.05rem; }

.code-title-actions {
  margin-inline-start: auto;
  display: flex;
  gap: 8px;
}

.btn.danger { color: #a23b3b; border-color: #e7c6c6; }
.btn.danger:hover { background: #fbe2e2; }

.lang-toggle {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.lang-toggle button {
  padding: 7px 10px;
  border: none;
  background: var(--panel);
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--muted);
}

.lang-toggle button.active { background: var(--accent); color: var(--accent-ink); }

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 60px 20px;
}

form.add-form { display: grid; gap: 14px; max-width: 480px; }
form.add-form label { display: grid; gap: 6px; font-size: 0.9rem; }
form.add-form input, form.add-form textarea {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.9rem;
  background: var(--panel);
  color: var(--ink);
}

.notice {
  background: #fbf3e2;
  border: 1px solid #ecd8a6;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.85rem;
  color: #6b5424;
  margin-bottom: 16px;
}