:root {
  --bg: #0F172A;
  --bg-card: #1E293B;
  --text: #CBD5E1;
  --text-sec: #64748B;
  --text-muted: #334155;
  --primary: #3B82F6;
  --accent: #10B981;
  --red: #EF4444;
  --amber: #F59E0B;
  --border: rgba(59,130,246,0.06);
  --radius: 12px;
  --font: 'Inter',system-ui,sans-serif;
  --mono: 'JetBrains Mono',monospace;
  --shadow: 0 1px 4px rgba(0,0,0,0.15);
}

[data-theme="light"] {
  --bg: #F1F5F9;
  --bg-card: #FFFFFF;
  --text: #1E293B;
  --text-sec: #475569;
  --text-muted: #94A3B8;
  --border: rgba(59,130,246,0.08);
  --shadow: 0 1px 4px rgba(0,0,0,0.06);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;transition:background .3s,color .3s}

.header{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:var(--bg-card);border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
.header h1{font-size:.88rem;font-weight:700;color:var(--primary)}
.header-right{display:flex;gap:4px}

.btn{padding:4px 10px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-sec);font-family:var(--font);font-size:.66rem;cursor:pointer;transition:.2s}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn.primary{background:var(--primary);color:#fff;border:none;font-weight:600}
.btn.full{width:100%}

.app{max-width:1000px;margin:0 auto;padding:12px}
.layout{display:grid;grid-template-columns:240px 1fr;gap:8px;align-items:start}

.sidebar{display:flex;flex-direction:column;gap:4px}

.input{width:100%;padding:4px 8px;border:1px solid var(--border);border-radius:6px;background:rgba(255,255,255,.02);color:var(--text);font-family:var(--font);font-size:.68rem}
.input.code{font-family:var(--mono);font-size:.62rem;line-height:1.5}
.input:focus{outline:none;border-color:var(--primary)}

.label{font-size:.52rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.03em;display:block;margin-bottom:1px}

/* Endpoint list */
.ep-item{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:6px 8px;cursor:pointer;transition:.15s;box-shadow:var(--shadow)}
.ep-item+.ep-item{margin-top:3px}
.ep-item:hover{border-color:rgba(59,130,246,.15)}
.ep-item.active{border-color:var(--primary);background:rgba(59,130,246,.04)}
.ep-method{font-size:.52rem;font-weight:700;font-family:var(--mono);padding:1px 4px;border-radius:3px}
.ep-method-GET{background:rgba(16,185,129,.08);color:var(--accent)}
.ep-method-POST{background:rgba(59,130,246,.08);color:var(--primary)}
.ep-method-PUT{background:rgba(245,158,11,.08);color:var(--amber)}
.ep-method-PATCH{background:rgba(245,158,11,.08);color:var(--amber)}
.ep-method-DELETE{background:rgba(239,68,68,.08);color:var(--red)}
.ep-path{font-size:.6rem;font-family:var(--mono);color:var(--text-sec);margin-left:4px}
.ep-status{font-size:.5rem;color:var(--text-muted);margin-left:auto}

.ep-row{display:flex;align-items:center;gap:4px}

/* Editor */
.editor{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);min-height:400px}
.empty-state{font-size:.7rem;color:var(--text-muted);text-align:center;padding:40px}

.fg{margin-bottom:6px}
.form-row{display:flex;gap:6px;margin-bottom:6px}
.form-actions{display:flex;gap:4px}

.form{animation:slideIn .2s ease}
@keyframes slideIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

/* Test result */
.test-result{margin-top:8px;border-top:1px solid var(--border);padding-top:8px}
.test-result h3{font-size:.56rem;color:var(--text-muted);text-transform:uppercase;margin-bottom:4px}
.test-meta{font-size:.58rem;color:var(--text-sec);margin-bottom:4px;font-family:var(--mono)}
.test-body{background:rgba(0,0,0,.15);border-radius:6px;padding:8px;font-family:var(--mono);font-size:.58rem;white-space:pre-wrap;line-height:1.5;color:var(--accent);max-height:200px;overflow-y:auto}

@media(max-width:600px){.layout{grid-template-columns:1fr}.form-row{flex-wrap:wrap}}