:root {
  color-scheme: dark;
  --bg: #080808;
  --bg-panel: #0d0d0f;
  --bg-raised: #141419;
  --border: #29292f;
  --border-soft: rgba(255,255,255,.08);
  --text: #f1f1f3;
  --text-muted: #9a9aa3;
  --text-faint: #686872;
  --accent: #90a9d8;
  --accent-dim: rgba(144,169,216,.12);
  --good: #74c991;
  --danger: #f08488;
  --font-ui: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "Cascadia Code", Consolas, monospace;
}
* { box-sizing: border-box; }
html { min-width: 280px; background: var(--bg); }
body.tool-page { min-height: 100svh; margin: 0; background:radial-gradient(circle at 12% 0,rgba(144,169,216,.075),transparent 34rem),linear-gradient(rgba(255,255,255,.015) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.015) 1px,transparent 1px),var(--bg);background-size:auto,44px 44px,44px 44px,auto;color:var(--text);font-family:var(--font-ui); }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.tool-topbar { position: sticky; top: 0; z-index: 20; min-height: 56px; display: flex; align-items: center; gap: 12px; padding: 8px clamp(14px,3vw,32px); border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(12px); }
.tool-brand { display: flex; align-items: center; gap: 11px; min-width: 0; color: var(--text); text-decoration: none; }
.tool-brand-mark { display: grid; place-items: center; width: 34px; height: 34px; flex: none; border: 1px solid var(--border); border-radius: 8px; color: var(--accent); background: var(--bg-raised); font: 700 .68rem/1 var(--font-mono); }
.tool-brand-copy { min-width: 0; display: grid; gap: 2px; }
.tool-brand-copy strong { font-size: .88rem; }
.tool-brand-copy small { color: var(--text-faint); font-size: .68rem; }
.tool-topbar .app-switcher { position: relative; }
.tool-topbar .app-switcher summary { list-style: none; display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--border); border-radius: 8px; color: var(--text-muted); cursor: pointer; }
.tool-topbar .app-switcher summary::-webkit-details-marker { display:none; }
.tool-topbar-spacer { flex: 1; }
.tool-action { min-height: 34px; padding: 0 11px; border: 1px solid var(--border); border-radius: 7px; background: var(--bg-raised); color: var(--text-muted); cursor: pointer; }
.tool-action.primary { border-color: color-mix(in srgb,var(--accent) 50%,var(--border)); color: var(--text); background: var(--accent-dim); }.tool-action:hover,.icon-button:hover{border-color:color-mix(in srgb,var(--accent) 48%,var(--border));color:var(--text);transform:translateY(-1px)}
.tool-shell { width: min(1280px, calc(100% - 40px)); margin: 0 auto; padding: clamp(30px,5vw,68px) 0 96px; }
.tool-intro { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.tool-eyebrow { display: block; margin-bottom: 9px; color: var(--accent); font: 700 .66rem/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
.tool-intro h1 { margin: 0; font-size: clamp(2rem,5vw,4.4rem); font-weight: 620; line-height: .98; letter-spacing: -.055em; }
.tool-intro p { max-width: 570px; margin: 12px 0 0; color: var(--text-muted); line-height: 1.6; }
.panel { border:1px solid var(--border);border-radius:12px;background:linear-gradient(145deg,rgba(255,255,255,.018),transparent 44%),var(--bg-panel);box-shadow:0 14px 38px rgba(0,0,0,.08); }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 48px; padding: 10px 14px; border-bottom: 1px solid var(--border-soft); }
.panel-head h2, .panel-head h3 { margin: 0; font-size: .82rem; font-weight: 650; }
.panel-body { padding: 16px; }
.field { width: 100%; min-height: 40px; padding: 9px 11px; border: 1px solid var(--border); border-radius: 7px; outline: 0; background: var(--bg); color: var(--text); }
textarea.field { min-height: 120px; resize: vertical; }
.field:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.empty-state { padding: 34px; color: var(--text-faint); text-align: center; }
.stack { display: grid; gap: 12px; }
.split { display: grid; grid-template-columns: minmax(0,1.45fr) minmax(280px,.75fr); gap: 16px; }
.pill { display:inline-flex; align-items:center; padding:4px 8px; border:1px solid var(--border); border-radius:999px; color:var(--text-muted); font-size:.68rem; }
.icon-button { display:grid; place-items:center; width:32px; height:32px; padding:0; border:1px solid var(--border); border-radius:7px; background:transparent; color:var(--text-muted); cursor:pointer; }
.row-actions { display:flex; align-items:center; gap:7px; }
@media (max-width: 760px) {
  .tool-shell { width:min(100% - 24px,620px); padding-top:28px; }
  .tool-intro { align-items:start; flex-direction:column; }
  .split { grid-template-columns:1fr; }
  .tool-brand-copy small { display:none; }
  .tool-topbar { padding-inline:10px; }
}