*{box-sizing:border-box}
:root{
  --bg:#080d17;--surface:#0f1726;--surface-2:#131e30;--surface-3:#18263b;
  --text:#edf5f2;--muted:#91a2b6;--border:#26364d;--accent:#34d399;--accent-2:#10b981;
  --danger:#fb7185;--shadow:0 24px 70px rgba(0,0,0,.28);--radius:20px;--radius-sm:12px;
  --max:1500px
}
[data-theme="light"]{--bg:#f4f7f8;--surface:#fff;--surface-2:#f7faf9;--surface-3:#edf4f1;--text:#13211e;--muted:#60716d;--border:#d8e2df;--shadow:0 20px 50px rgba(21,43,37,.10)}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 10% -10%,rgba(52,211,153,.12),transparent 28%),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.5}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
.app-shell{min-height:100vh}
.topbar{height:70px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(18px)}
.brand{display:flex;gap:10px;align-items:center;font-weight:800;letter-spacing:-.03em;font-size:1.05rem}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:rgba(52,211,153,.12);color:var(--accent);border:1px solid rgba(52,211,153,.3);font-family:ui-monospace,monospace}
.brand-accent{color:var(--accent)}
.topbar-actions{display:flex;align-items:center;gap:10px}
.status-pill{font-size:.78rem;color:var(--muted);border:1px solid var(--border);padding:7px 10px;border-radius:999px;background:var(--surface)}
.status-dot{display:inline-block;width:7px;height:7px;background:var(--accent);border-radius:50%;margin-right:6px}
.icon-btn{width:38px;height:38px;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:10px}
.workspace{max-width:var(--max);margin:auto;padding:34px 24px 70px}
.hero{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:28px}
.eyebrow,.section-kicker{font-size:.7rem;letter-spacing:.15em;font-weight:800;color:var(--accent);margin:0 0 7px}
.hero h1{font-size:clamp(2rem,4vw,3.5rem);line-height:1.04;letter-spacing:-.055em;max-width:900px;margin:0}
.hero h1 span{color:var(--accent)}
.hero-copy{color:var(--muted);max-width:800px;margin:15px 0 0;font-size:1.02rem}
.hero-actions{display:flex;gap:9px;flex-wrap:wrap;justify-content:flex-end}
.layout{display:grid;grid-template-columns:minmax(340px,490px) minmax(0,1fr);gap:20px;align-items:start}
.panel{background:linear-gradient(180deg,var(--surface),color-mix(in srgb,var(--surface) 92%,var(--surface-2)));border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.configurator{overflow:hidden}
.panel-heading,.output-head{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 22px 16px;border-bottom:1px solid var(--border)}
.panel-heading h2,.output-head h2{margin:0;font-size:1.15rem;letter-spacing:-.025em}
.completion{font-size:.8rem;color:var(--accent);font-weight:800}
details{border-bottom:1px solid var(--border)}
details:last-child{border-bottom:0}
summary{padding:16px 22px;cursor:pointer;font-weight:750;list-style:none;display:flex;align-items:center;justify-content:space-between}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";color:var(--muted);font-size:1.2rem}
details[open] summary:after{content:"−"}
details>div,details>.field,details>.switch-row{padding-left:22px;padding-right:22px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding-bottom:18px}
.field{display:grid;gap:7px;margin-bottom:13px}
.field.full{grid-column:1/-1}
.field span{font-size:.78rem;font-weight:700;color:var(--text)}
.field em{font-style:normal;color:var(--muted);font-weight:500}
input,textarea,select{width:100%;border:1px solid var(--border);background:var(--surface-2);color:var(--text);border-radius:11px;padding:11px 12px;outline:none;transition:.18s border-color,.18s box-shadow}
textarea{resize:vertical;min-height:90px}
input:focus,textarea:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(52,211,153,.12)}
.option-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding-bottom:12px}
.check{display:flex;align-items:center;gap:8px;border:1px solid var(--border);padding:10px;border-radius:10px;color:var(--muted);font-size:.82rem}
.check input{width:auto;accent-color:var(--accent)}
.switch-row{display:flex;align-items:center;gap:10px;padding-bottom:15px;color:var(--text)}
.switch-row small{display:block;color:var(--muted);font-size:.72rem;margin-top:1px}
.toggle input{display:none}
.toggle span{display:block;width:42px;height:24px;border-radius:999px;background:var(--surface-3);border:1px solid var(--border);position:relative;transition:.2s}
.toggle span:after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:var(--muted);transition:.2s}
.toggle input:checked+span{background:rgba(52,211,153,.18);border-color:var(--accent)}
.toggle input:checked+span:after{left:21px;background:var(--accent)}
.btn{border:1px solid var(--border);border-radius:11px;padding:10px 14px;font-weight:750;color:var(--text);background:var(--surface-2);transition:.18s transform,.18s border-color,.18s background}
.btn:hover{transform:translateY(-1px);border-color:#3b506d}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--accent);color:#062019;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-2);border-color:var(--accent-2)}
.btn-secondary{background:var(--surface)}
.btn-ghost{background:transparent}
.output-panel{min-width:0;position:sticky;top:90px}
.output-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.prompt-toolbar{display:flex;gap:8px;align-items:center;padding:10px 22px;border-bottom:1px solid var(--border);background:var(--surface-2);font-size:.76rem;color:var(--muted)}
.toolbar-stat{padding:5px 9px;border:1px solid var(--border);border-radius:999px}
.toolbar-stat span{color:var(--text);font-weight:800}
.select-inline{margin-left:auto;display:flex;gap:7px;align-items:center}
.select-inline select{width:auto;padding:5px 8px;border-radius:8px;font-size:.76rem}
.prompt-preview{padding:30px;max-height:calc(100vh - 190px);overflow:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono",monospace;font-size:.83rem;line-height:1.72;white-space:pre-wrap;word-break:break-word}
.prompt-preview h3{font-family:Inter,ui-sans-serif,system-ui,sans-serif}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--text);color:var(--bg);padding:10px 15px;border-radius:10px;font-size:.82rem;font-weight:750;transition:.2s;z-index:30}
.toast.show{opacity:1;transform:translate(-50%,0)}
.footer{text-align:center;color:var(--muted);font-size:.74rem;padding:0 20px 30px}
@media(max-width:1050px){.layout{grid-template-columns:1fr}.output-panel{position:static}.prompt-preview{max-height:none}.hero{align-items:start;flex-direction:column}.hero-actions{justify-content:flex-start}}
@media(max-width:620px){.topbar{padding:0 14px}.status-pill{display:none}.workspace{padding:22px 12px 50px}.hero h1{font-size:2rem}.hero-copy{font-size:.92rem}.panel-heading,.output-head{padding:18px 16px;align-items:flex-start;flex-direction:column}.output-actions{justify-content:flex-start}.prompt-toolbar{padding:9px 16px;flex-wrap:wrap}.select-inline{margin-left:0}.prompt-preview{padding:20px 16px;font-size:.77rem}.form-grid,.option-grid{grid-template-columns:1fr}details>div,details>.field,details>.switch-row,summary{padding-left:16px;padding-right:16px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}