:root{--bg:#F5F5F5;--card:#26231f;--text:#eae6df;--muted:#bcb6ad;--border:#3a362f;--accent:#e60023;--accentHover:#c2181b;--shadow:0 10px 28px rgba(0,0,0,.35)}
*{box-sizing:border-box}
html,body{height:100%}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;margin:0;color:var(--text);background:var(--bg);
  background-image:
    radial-gradient(1200px 600px at -10% -20%, rgba(255,255,255,.05), transparent 60%),
    radial-gradient(1200px 600px at 110% 120%, rgba(255,255,255,.04), transparent 60%),
    repeating-linear-gradient(to bottom, rgba(255,255,255,.04) 0, rgba(255,255,255,.04) 24px, transparent 25px),
    linear-gradient(to bottom, rgba(0,0,0,.25), rgba(0,0,0,.15));
  background-blend-mode: overlay;
}
header{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
header h1{margin:0;padding:18px 20px;font-size:20px;font-weight:600}
.notice{background:#2a2723;color:var(--text);padding:10px 20px;font-size:13px;border-bottom:1px solid var(--border);text-align:center}
.notice::before{content:"\1F514";margin-right:8px}
.notice a{color:var(--accent);text-decoration:none;font-weight:600}
.container{max-width:1100px;margin:0 auto;padding:26px 22px}
.panel{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:var(--shadow);margin-bottom:24px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:12px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;margin-bottom:12px}
label{font-size:13px;color:var(--muted);margin:8px 0 6px}
input,textarea,select{width:100%;background:#2d2a25;border:1px solid var(--border);border-radius:12px;padding:12px 12px;font-size:14px;color:var(--text);outline:none}
input:focus,textarea:focus,select:focus{border-color:#d6d0c6;box-shadow:0 0 0 4px rgba(218,213,204,.15)}
textarea{min-height:120px}
.actions{margin-top:16px;display:flex;gap:12px}
.btn{border:0;border-radius:999px;padding:10px 16px;font-size:14px;cursor:pointer;background:#3a362f;color:var(--text)}
.btn:hover{background:#4a453d}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accentHover)}
.nav{display:flex;gap:10px;margin:24px 0;overflow-x:auto;-webkit-overflow-scrolling:touch}
.nav::-webkit-scrollbar{height:0}
.tab{background:var(--card);border:1px solid var(--border);color:var(--text);padding:10px 14px;border-radius:999px;cursor:pointer}
.tab.active{background:var(--accent);border-color:var(--accent);color:#fff}
.section{display:none;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:var(--shadow);margin-bottom:18px}
.section.active{display:block}
.inline{display:flex;gap:12px;align-items:center;margin-bottom:8px}
.badge{background:#fee2e2;color:#7f1d1d;border-radius:8px;padding:4px 8px;font-size:12px}
.hint{color:var(--muted);font-size:12px}
.output{background:#1b1a17;color:#e5e7eb;border-radius:12px;padding:14px;white-space:pre-wrap;margin-top:12px;position:relative}
.output-copy{position:absolute;top:8px;right:8px;background:#3a362f;color:#bcb6ad;border:1px solid #4a453d;border-radius:6px;padding:4px 8px;font-size:12px;cursor:pointer;opacity:0.7;transition:all 0.2s}
.output-copy:hover{opacity:1;background:#4a453d;color:#fff}
.output-copy::after{content:"📋"}
.output.small{font-size:12px;padding:10px}
.errorbox{background:#2d2a25;border:1px solid var(--border);border-radius:12px;padding:12px;margin:10px 0}
.errorbox .badge{margin-right:8px;vertical-align:middle}
.toast{position:fixed;right:20px;bottom:20px;background:var(--accent);color:#fff;border-radius:12px;padding:12px 16px;box-shadow:var(--shadow);opacity:0;transform:translateY(10px);transition:.2s}
.toast.show{opacity:1;transform:translateY(0)}
.spinner{width:16px;height:16px;border:2px solid #fff;border-top-color:transparent;border-radius:50%;display:inline-block;vertical-align:middle;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

@media (max-width:1024px){
  .container{padding:22px 16px}
  .row{grid-template-columns:1fr}
  .row3{grid-template-columns:1fr 1fr}
}

@media (max-width:768px){
  header h1{padding:16px;font-size:18px}
  .panel{padding:16px;margin-bottom:20px}
  .nav{gap:8px;margin:18px 0}
  .tab{padding:8px 12px}
  .actions{flex-wrap:wrap}
  .output{font-size:13px}
  .toast{right:12px;bottom:12px}
}

@media (max-width:480px){
  .row3{grid-template-columns:1fr}
  .tab{min-width:160px}
}