/* ── Aether v2 · Studio chrome ─────────────────────────────────
   The studio stays quiet and instrumental; the generated site in
   the center is the star. Warm graphite + one brass signal color. */

:root {
  --bg: #141517; --panel: #1a1c1f; --card: #212327; --card2: #292c31;
  --line: #2e3136; --line2: #3b3f45;
  --t1: #eceae5; --t2: #b6b2a9; --t3: #807c73;
  --brass: #d2a24c; --brass-soft: rgba(210, 162, 76, .14);
  --ok: #7fb069; --warn: #d98c5f;
  --r: 8px;
  --mono: 'Spline Sans Mono', ui-monospace, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg); color: var(--t1); overflow: hidden;
  font: 13.5px/1.5 'Inter Tight', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-thumb { background: var(--line2); border-radius: 4px; }
button { font: inherit; color: inherit; cursor: pointer; }

#app { display: grid; grid-template-columns: 330px 1fr 350px; grid-template-rows: 50px 1fr; height: 100vh; }

/* Topbar */
#top {
  grid-column: 1 / -1; display: flex; align-items: center; gap: 14px;
  padding: 0 18px; background: var(--panel); border-bottom: 1px solid var(--line);
}
.logo { font-family: var(--mono); font-size: 14px; letter-spacing: .06em; }
.logo b { color: var(--brass); font-weight: 600; }
.top-meta { font-family: var(--mono); font-size: 11px; color: var(--t3); }
.sp { flex: 1; }
.top-btn {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 7px 14px; font-size: 12.5px; color: var(--t2); transition: .15s;
}
.top-btn:hover { color: var(--t1); border-color: var(--line2); background: var(--card2); }
.top-btn.primary { background: var(--brass); border-color: var(--brass); color: #1a1407; font-weight: 600; }
.top-btn.primary:hover { filter: brightness(1.08); }

/* Panels */
.panel { background: var(--panel); overflow-y: auto; display: flex; flex-direction: column; }
#left { border-right: 1px solid var(--line); }
#right { border-left: 1px solid var(--line); }
.panel-body { padding: 16px; display: flex; flex-direction: column; gap: 18px; flex: 1; }

.step-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--t3); display: flex; align-items: center; gap: 8px;
}
.step-label::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.step-label b { color: var(--brass); font-weight: 500; }

/* Industry + style pickers */
.pick-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.pick {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 9px 11px; text-align: left; font-size: 12.5px; color: var(--t2);
  display: flex; align-items: center; gap: 8px; transition: .12s;
}
.pick:hover { border-color: var(--line2); color: var(--t1); }
.pick.on { border-color: var(--brass); color: var(--t1); background: var(--brass-soft); }
.pick .ico { font-size: 13px; }

.style-pick {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 10px 12px; text-align: left; width: 100%; transition: .12s;
  display: flex; align-items: center; gap: 11px; margin-bottom: 7px;
}
.style-pick:hover { border-color: var(--line2); }
.style-pick.on { border-color: var(--brass); background: var(--brass-soft); }
.swatch { display: flex; border-radius: 4px; overflow: hidden; flex-shrink: 0; border: 1px solid rgba(255,255,255,.12); }
.swatch i { width: 11px; height: 26px; display: block; }
.style-pick .nm { font-size: 12.5px; font-weight: 500; color: var(--t1); }
.style-pick .hint { font-size: 10.5px; color: var(--t3); line-height: 1.35; margin-top: 1px; }
.style-pick.rec .nm::after { content: ' · suggested'; color: var(--brass); font-size: 10px; font-family: var(--mono); }

/* Brief fields */
.field { display: flex; flex-direction: column; gap: 5px; }
.field label { font-size: 11px; color: var(--t2); font-weight: 500; }
.field label small { color: var(--t3); font-weight: 400; }
.field input, .field textarea, .field select {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 8px 10px; color: var(--t1); font: 12.5px/1.45 'Inter Tight', sans-serif; width: 100%;
}
.field textarea { resize: vertical; min-height: 50px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--brass); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.gen-btn {
  width: 100%; padding: 13px; border: 0; border-radius: var(--r);
  background: var(--brass); color: #1a1407; font-weight: 700; font-size: 13.5px;
  letter-spacing: .02em; transition: .15s;
}
.gen-btn:hover { filter: brightness(1.07); }
.gen-btn:disabled { opacity: .4; cursor: not-allowed; }
.demo-link {
  background: none; border: 0; color: var(--t3); font-size: 11.5px;
  text-decoration: underline; text-underline-offset: 3px; margin-top: 8px;
}
.demo-link:hover { color: var(--brass); }
.left-foot { padding: 14px 16px; border-top: 1px solid var(--line); }

/* Center / preview */
#center { display: flex; flex-direction: column; background: #0e0f10; }
.center-bar {
  display: flex; align-items: center; gap: 10px; padding: 8px 14px;
  border-bottom: 1px solid var(--line); background: var(--panel);
}
.dev-toggle { display: flex; gap: 2px; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 2px; }
.dev-toggle button { background: none; border: 0; border-radius: 6px; padding: 4px 12px; font-size: 11.5px; color: var(--t3); }
.dev-toggle button.on { background: var(--card2); color: var(--t1); }
.center-bar .meta { font-family: var(--mono); font-size: 10.5px; color: var(--t3); }
#stage { flex: 1; display: flex; justify-content: center; overflow: auto; padding: 18px; }
#frame {
  width: 100%; max-width: 1480px; height: 100%; border: 1px solid var(--line);
  border-radius: 6px; background: #fff; transition: max-width .25s ease;
}
#frame.mobile { max-width: 392px; }
.empty-state {
  margin: auto; text-align: center; color: var(--t3); max-width: 320px;
}
.empty-state h2 { font-size: 15px; color: var(--t2); font-weight: 600; margin-bottom: 8px; }
.empty-state p { font-size: 12.5px; line-height: 1.6; }

/* Right panel — section stack */
.sec-row {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  margin-bottom: 7px; overflow: hidden;
}
.sec-row.on { border-color: var(--brass); }
.sec-row-head { display: flex; align-items: center; gap: 6px; padding: 8px 10px; cursor: pointer; }
.sec-row-head .nm { flex: 1; font-size: 12.5px; font-weight: 500; }
.sec-row-head .variant {
  font-family: var(--mono); font-size: 10px; color: var(--t3);
  background: var(--card2); border: 1px solid var(--line); border-radius: 5px; padding: 2px 7px;
}
.sec-row-head .variant:hover { color: var(--brass); border-color: var(--brass); }
.sec-row-head .variant.fixed { pointer-events: none; opacity: .5; }
.mini-btn {
  background: none; border: 0; color: var(--t3); font-size: 12px; padding: 2px 4px; border-radius: 4px;
}
.mini-btn:hover { color: var(--t1); background: var(--card2); }
.mini-btn.danger:hover { color: #e07a6a; }

/* Inline section editor */
.sec-edit { border-top: 1px solid var(--line); padding: 12px 11px; display: flex; flex-direction: column; gap: 10px; background: #1d1f23; }
.sec-edit .ef label {
  display: block; font-family: var(--mono); font-size: 9.5px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--t3); margin-bottom: 4px;
}
.sec-edit textarea, .sec-edit input {
  width: 100%; background: var(--card); border: 1px solid var(--line); border-radius: 6px;
  padding: 7px 9px; color: var(--t1); font: 12px/1.5 'Inter Tight', sans-serif; resize: vertical;
}
.sec-edit textarea:focus, .sec-edit input:focus { outline: none; border-color: var(--brass); }
.item-block { border: 1px solid var(--line); border-radius: 6px; padding: 9px; display: flex; flex-direction: column; gap: 7px; position: relative; }
.item-block .rm-item { position: absolute; top: 5px; right: 6px; }
.add-item { align-self: flex-start; background: none; border: 1px dashed var(--line2); border-radius: 6px; color: var(--t3); font-size: 11px; padding: 5px 10px; }
.add-item:hover { color: var(--brass); border-color: var(--brass); }
.edit-note { font-size: 10.5px; color: var(--warn); line-height: 1.45; }

.add-sec-row { display: flex; gap: 7px; margin-top: 4px; }
.add-sec-row select {
  flex: 1; background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 7px 9px; color: var(--t2); font-size: 12px;
}
.add-sec-row button {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 7px 13px; font-size: 12px; color: var(--t2);
}
.add-sec-row button:hover { color: var(--brass); border-color: var(--brass); }

.right-empty { color: var(--t3); font-size: 12px; line-height: 1.6; padding: 8px 2px; }

#toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--card2); border: 1px solid var(--line2); border-radius: 8px;
  padding: 9px 16px; font-size: 12.5px; transition: transform .2s ease; z-index: 99;
}
#toast.show { transform: translateX(-50%) translateY(0); }

@media (max-width: 1100px) {
  #app { grid-template-columns: 290px 1fr 300px; }
}