:root {
  --bg: #f6f5f2;
  --panel: #ffffff;
  --ink: #1c1b22;
  --muted: #6c6a75;
  --line: #e6e3dc;
  --accent: #6d28d9;
  --accent-ink: #ffffff;
  --accent-soft: #efe9fb;
  --warn: #b45309;
  --danger: #b91c1c;
  --ok: #047857;
  --stage: #e9e7e1;
  --radius: 10px;
  --topbar-h: 56px;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16151a;
    --panel: #1f1e25;
    --ink: #ece9f3;
    --muted: #a19eab;
    --line: #34323c;
    --accent: #a78bfa;
    --accent-ink: #16151a;
    --accent-soft: #2c2640;
    --stage: #0f0e12;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); }
body { display: flex; flex-direction: column; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

button, .ghost, select, input, textarea { font: inherit; color: inherit; }
button, .ghost {
  border: 1px solid var(--line); background: var(--panel); border-radius: 8px;
  padding: 6px 12px; cursor: pointer; text-decoration: none; line-height: 1.3;
}
button:hover:not(:disabled), .ghost:hover { border-color: var(--accent); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.danger { color: var(--danger); }
button.active, [aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); }
.link-button { border: 0; background: none; color: var(--accent); padding: 4px 0; }
.ghost { border-color: transparent; background: transparent; }

.topbar {
  height: var(--topbar-h); display: flex; align-items: center; gap: 16px; padding: 0 16px;
  background: var(--panel); border-bottom: 1px solid var(--line); flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 18px; color: var(--ink); text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); }
.toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; overflow-x: auto; flex: 1; }
.group { display: flex; gap: 4px; }
.segmented button { border-radius: 0; margin-left: -1px; }
.segmented button:first-child { border-radius: 8px 0 0 8px; }
.segmented button:last-child { border-radius: 0 8px 8px 0; }
.github { margin-left: auto; }

.hint {
  display: flex; gap: 12px; align-items: center; justify-content: space-between;
  padding: 8px 16px; background: var(--accent-soft); border-bottom: 1px solid var(--line); font-size: 14px;
}
.hint button { border: 0; background: none; font-size: 18px; }

.workspace { flex: 1; display: grid; grid-template-columns: 260px 1fr 300px; min-height: 0; }
body:not(.has-project) .workspace { grid-template-columns: 1fr; }
body:not(.has-project) .project-only { display: none !important; }

.sidebar { background: var(--panel); overflow-y: auto; padding: 16px; min-height: 0; }
.sidebar.left { border-right: 1px solid var(--line); }
.sidebar.right { border-left: 1px solid var(--line); }
.sidebar h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 18px 0 8px; }
.sidebar h3 { font-size: 13px; margin: 14px 0 8px; }
.sidebar section:first-child h2 { margin-top: 0; }

.pages-list, .section-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 4px; }
.pages-list li, .section-list li { min-width: 0; }
.pages-list li { display: flex; gap: 4px; }
.page-link { flex: 1; text-align: left; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pages-list li.active .page-link { background: var(--accent-soft); border-color: var(--accent); font-weight: 600; }
.icon { padding: 4px 9px; }
.section-list button { width: 100%; text-align: left; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.section-list button.is-hidden { color: var(--warn); border-style: dashed; }

.swatches { display: flex; flex-wrap: wrap; gap: 8px; }
.swatch { position: relative; width: 32px; height: 32px; cursor: pointer; }
.swatch-chip { display: block; width: 100%; height: 100%; border-radius: 8px; border: 1px solid var(--line); box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.35); }
.swatch-input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.font-row select { width: 100%; margin-bottom: 6px; }
.brand-host { padding: 10px; margin-bottom: 10px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--accent-soft); display: grid; gap: 8px; }
.brand-host h3 { margin: 0; }
.brand-card { display: grid; gap: 6px; }
.brand-chips { display: flex; gap: 6px; }
.small-chip { width: 24px; height: 24px; border-radius: 6px; }
.brand-dialog .field-row { grid-template-columns: repeat(2, 1fr); }

.stage { position: relative; overflow: auto; background: var(--stage); display: flex; justify-content: center; padding: 20px; min-height: 0; --canvas-width: 100%; }
.canvas-frame { width: var(--canvas-width); max-width: 100%; height: 100%; min-height: 480px; border: 0; background: #ffffff; border-radius: 6px; box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12); transition: width 0.2s ease; }
.stage.busy::after { content: 'Loading page…'; position: absolute; top: 28px; left: 50%; transform: translateX(-50%); background: var(--panel); padding: 6px 14px; border-radius: 999px; font-size: 13px; }

.welcome { max-width: 760px; margin: 5vh auto; text-align: center; padding: 0 8px; }
.welcome h1 { font-size: clamp(30px, 5vw, 48px); line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; }
.lead { font-size: 18px; color: var(--muted); margin: 0 auto 28px; max-width: 620px; }
.dropzone { border: 2px dashed var(--accent); border-radius: 16px; padding: 32px 20px; background: var(--panel); }
.dropzone-title { font-weight: 600; margin: 0 0 16px; }
.steps { text-align: left; max-width: 520px; margin: 28px auto 0; color: var(--muted); line-height: 1.8; }
.privacy { margin-top: 20px; font-size: 14px; color: var(--muted); }

.button-row { display: flex; flex-wrap: wrap; gap: 6px; }
.button-row.center { justify-content: center; }
.button-row.end { justify-content: flex-end; }

.inspector-head { display: grid; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.inspector-head .button-row button { padding: 4px 8px; font-size: 13px; }
.panel-section { padding: 4px 0 12px; border-bottom: 1px solid var(--line); }
.field { display: grid; gap: 4px; margin-bottom: 10px; font-size: 13px; }
.field-label { color: var(--muted); }
.field-hint { font-size: 12px; color: var(--muted); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.field input[type="text"], .field input[type="url"], .field input[type="number"], .field select { width: 100%; padding: 6px 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.field input[type="color"] { width: 100%; height: 34px; border: 1px solid var(--line); border-radius: 8px; padding: 2px; background: var(--panel); }
.inline { display: flex; gap: 6px; align-items: center; }
.check { display: flex; gap: 8px; align-items: center; font-size: 13px; margin: 6px 0; }
.reveal { font-weight: 600; }
.empty-note { color: var(--ink); font-size: 14px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.drop-overlay { position: fixed; inset: 0; background: rgba(109, 40, 217, 0.18); border: 4px dashed var(--accent); display: grid; place-items: center; z-index: 50; pointer-events: none; }
.drop-overlay p { background: var(--panel); padding: 14px 26px; border-radius: 999px; font-weight: 700; font-size: 20px; }

.toasts { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); display: grid; gap: 8px; z-index: 60; width: min(560px, calc(100% - 32px)); }
.toast { background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 14px; box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2); }
.toast-warn { background: var(--warn); color: #ffffff; }
.toast-error { background: var(--danger); color: #ffffff; }
.toast-success { background: var(--ok); color: #ffffff; }

dialog { border: 1px solid var(--line); border-radius: 14px; padding: 22px; width: min(720px, calc(100% - 32px)); background: var(--panel); color: var(--ink); }
dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
dialog h2 { margin-top: 0; }
dialog textarea { width: 100%; font-family: ui-monospace, Menlo, monospace; font-size: 13px; border: 1px solid var(--line); border-radius: 8px; padding: 10px; background: var(--bg); margin-bottom: 12px; }
.noscript { padding: 24px; text-align: center; }

@media (max-width: 1000px) {
  .workspace { grid-template-columns: 1fr; grid-auto-rows: min-content; overflow-y: auto; }
  .stage { order: -1; height: 70vh; }
  .sidebar.left, .sidebar.right { border: 0; border-top: 1px solid var(--line); }
  .topbar { height: auto; padding: 8px 16px; flex-wrap: wrap; }
}