/* OP/AL — shared design tokens & shell
   more-than.design
*/
:root {
  --opal-bg: #f5f3ee;
  --opal-ink: #1a1a1a;
  --opal-panel: #ffffff;
  --opal-line: #e2dfd7;
  --opal-muted: #7a766f;
  --opal-accent: #1a1a1a;
  --opal-accent-soft: #2f2c27;
  --opal-radius: 4px;
  --opal-font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --opal-font-serif: 'Playfair Display', 'Iowan Old Style', Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--opal-bg);
  color: var(--opal-ink);
  font-family: var(--opal-font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ---------- Top bar ---------- */
.opal-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--opal-line);
  background: var(--opal-bg);
  position: sticky; top: 0; z-index: 10;
}
.opal-brand { display: flex; align-items: center; gap: 14px; }
.opal-brand .opal-mark {
  height: 22px;
  width: auto;
  display: block;
}
.opal-brand .opal-mark svg,
.opal-brand .opal-mark img { height: 22px; width: auto; display: block; }
.opal-brand .opal-divider {
  width: 1px; height: 18px; background: var(--opal-line);
}
.opal-brand .opal-product {
  font-family: var(--opal-font-serif);
  font-style: italic;
  font-size: 16px;
  letter-spacing: .01em;
}
.opal-topbar .opal-meta {
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--opal-muted);
}
.opal-topbar .opal-meta a { text-decoration: none; }
.opal-topbar .opal-meta a:hover { color: var(--opal-ink); }

/* ---------- App shell (sidebar + main) ---------- */
.opal-app {
  display: grid;
  grid-template-columns: 380px 1fr;
  min-height: calc(100vh - 53px);
}
.opal-sidebar {
  background: var(--opal-panel);
  border-right: 1px solid var(--opal-line);
  padding: 22px;
  overflow-y: auto;
  max-height: calc(100vh - 53px);
}
.opal-main {
  padding: 32px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

/* ---------- Type ---------- */
.opal-h1 {
  font-family: var(--opal-font-serif);
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 2px;
  letter-spacing: -.01em;
}
.opal-sub {
  color: var(--opal-muted);
  font-size: 12px;
  letter-spacing: .04em;
  margin-bottom: 18px;
}

/* ---------- Form ---------- */
.opal-label {
  display: block;
  font-size: 10px;
  color: var(--opal-muted);
  margin: 14px 0 5px;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-weight: 500;
}
.opal-input,
.opal-select,
.opal-textarea {
  width: 100%;
  background: var(--opal-bg);
  border: 1px solid var(--opal-line);
  color: var(--opal-ink);
  padding: 9px 10px;
  border-radius: var(--opal-radius);
  font-size: 14px;
  font-family: inherit;
  transition: border-color .15s, background .15s;
}
.opal-input:focus,
.opal-select:focus,
.opal-textarea:focus {
  outline: none;
  border-color: var(--opal-ink);
  background: #fff;
}
.opal-textarea { resize: vertical; min-height: 80px; }
.opal-row { display: flex; gap: 8px; }
.opal-row > * { flex: 1; }

input[type=range] { width: 100%; accent-color: var(--opal-ink); }
input[type=file] { font-size: 12px; color: var(--opal-muted); }

.opal-btn {
  background: var(--opal-ink);
  color: #fff;
  border: 0;
  padding: 11px 14px;
  border-radius: var(--opal-radius);
  font-weight: 500;
  cursor: pointer;
  width: 100%;
  font-size: 13px;
  letter-spacing: .04em;
  font-family: inherit;
  transition: background .15s;
}
.opal-btn:hover { background: var(--opal-accent-soft); }
.opal-btn.secondary {
  background: transparent;
  color: var(--opal-ink);
  border: 1px solid var(--opal-line);
}
.opal-btn.secondary:hover { background: var(--opal-bg); border-color: var(--opal-ink); }

.opal-segments {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--opal-line);
  border-radius: var(--opal-radius);
  overflow: hidden;
}
.opal-segments button {
  background: transparent;
  border: 0;
  padding: 10px 8px;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
  color: var(--opal-muted);
  border-right: 1px solid var(--opal-line);
}
.opal-segments button:last-child { border-right: 0; }
.opal-segments button.active {
  background: var(--opal-ink);
  color: #fff;
}

.opal-hint {
  font-size: 11px;
  color: var(--opal-muted);
  margin-top: 6px;
  line-height: 1.45;
}

details.opal-section {
  margin-top: 16px;
  border-top: 1px solid var(--opal-line);
  padding-top: 12px;
}
details.opal-section > summary {
  cursor: pointer;
  font-size: 10px;
  color: var(--opal-muted);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-weight: 500;
  list-style: none;
}
details.opal-section > summary::-webkit-details-marker { display: none; }
details.opal-section > summary::after { content: ' +'; }
details.opal-section[open] > summary::after { content: ' −'; }

/* ---------- Canvas frame ---------- */
.opal-canvas-wrap {
  background: #fff;
  padding: 20px;
  border: 1px solid var(--opal-line);
  border-radius: var(--opal-radius);
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
}
.opal-canvas-wrap canvas {
  max-width: 100%;
  max-height: calc(100vh - 160px);
  height: auto;
  display: block;
  background: #fff;
  cursor: grab;
}
.opal-canvas-wrap canvas:active { cursor: grabbing; }

/* ---------- Tool grid (landing page) ---------- */
.opal-grid {
  max-width: 1100px;
  margin: 60px auto;
  padding: 0 32px;
}
.opal-grid-head {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--opal-line);
}
.opal-grid-head h2 {
  font-family: var(--opal-font-serif);
  font-size: 40px;
  font-weight: 400;
  margin: 0 0 8px;
  letter-spacing: -.01em;
}
.opal-grid-head p {
  margin: 0;
  color: var(--opal-muted);
  max-width: 560px;
}
.opal-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.opal-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: #fff;
  border: 1px solid var(--opal-line);
  border-radius: var(--opal-radius);
  padding: 22px;
  transition: border-color .15s, transform .15s;
}
.opal-card:hover { border-color: var(--opal-ink); transform: translateY(-1px); }
.opal-card .opal-card-eyebrow {
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--opal-muted);
  margin-bottom: 10px;
}
.opal-card h3 {
  font-family: var(--opal-font-serif);
  font-weight: 500;
  font-size: 22px;
  margin: 0 0 6px;
}
.opal-card p {
  margin: 0;
  font-size: 13px;
  color: var(--opal-muted);
  line-height: 1.5;
}