:root{
  --bg:#0e1117; --panel:#161b24; --panel-2:#1c2230; --line:#2a3242;
  --fg:#e8edf6; --muted:#8b98ad; --accent:#4d8fe0; --accent-2:#6fd3c7;
  --warn:#f2c14e; --danger:#e06666; --radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 700px at 15% -10%,#1b2433 0%,var(--bg) 55%);
  color:var(--fg);
  font:14px/1.55 "Segoe UI","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  min-height:100vh;
}
h1{font-size:19px;margin:0}
h2{font-size:16px;margin:0 0 14px;display:flex;align-items:center;gap:10px}
p{margin:8px 0}
.muted{color:var(--muted);font-weight:400}
.small{font-size:12px}
.hidden{display:none !important}
.spacer{flex:1}

.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 26px;border-bottom:1px solid var(--line);
  background:rgba(14,17,23,.85);backdrop-filter:blur(8px);
  position:sticky;top:0;z-index:30;
}
.brand{display:flex;align-items:center;gap:14px}
.brand p{margin:2px 0 0;color:var(--muted);font-size:12.5px}
.logo{font-size:30px;filter:drop-shadow(0 0 12px rgba(77,143,224,.5))}
.health{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);
  border:1px solid var(--line);padding:7px 12px;border-radius:999px;background:var(--panel)}
.health .dot{width:9px;height:9px;border-radius:50%;background:#5a6577}
.health.ok .dot{background:#3fd08a;box-shadow:0 0 10px #3fd08a}
.health.bad .dot{background:var(--danger);box-shadow:0 0 10px var(--danger)}

main{max-width:1180px;margin:0 auto;padding:24px 26px 80px;display:flex;flex-direction:column;gap:18px}
.card{background:linear-gradient(180deg,var(--panel),#141924);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 22px;box-shadow:0 12px 34px rgba(0,0,0,.28)}
.step{display:inline-grid;place-items:center;width:23px;height:23px;border-radius:50%;
  background:var(--accent);color:#fff;font-size:12.5px;font-weight:700}

.dropzone{border:2px dashed #33405a;border-radius:var(--radius);padding:34px 20px;text-align:center;
  transition:.16s;background:#121722;cursor:pointer}
.dropzone:hover,.dropzone.over{border-color:var(--accent);background:#141d2c;transform:translateY(-1px)}
.dropzone.ready{border-style:solid;border-color:var(--accent-2)}
.dz-icon{font-size:34px;margin-bottom:6px}
.dz-main{font-size:15px}
.dz-hint{color:var(--muted);font-size:12px;margin-top:4px}
.dz-name{margin-top:10px;color:var(--accent-2);font-weight:600;word-break:break-all}
.link{background:none;border:none;color:var(--accent);cursor:pointer;font:inherit;padding:0;text-decoration:underline}

button{
  font:inherit;color:var(--fg);background:var(--panel-2);border:1px solid var(--line);
  padding:9px 15px;border-radius:9px;cursor:pointer;transition:.15s;white-space:nowrap
}
button:hover:not(:disabled){border-color:#3d4c68;background:#222a3a;transform:translateY(-1px)}
button:disabled{opacity:.45;cursor:not-allowed}
button.primary{background:linear-gradient(180deg,#4d8fe0,#3a72bb);border-color:#4d8fe0;font-weight:600;
  box-shadow:0 6px 18px rgba(77,143,224,.3)}
button.primary:hover:not(:disabled){background:linear-gradient(180deg,#5c9dea,#437cc5)}
.small-btn{padding:7px 13px;font-size:13px}
button.active{background:var(--accent);border-color:var(--accent);font-weight:600}
#start-btn{width:100%;margin-top:16px;padding:13px;font-size:15px}

.options{margin-top:16px;border:1px solid var(--line);border-radius:10px;background:#121722}
.options summary{cursor:pointer;padding:11px 14px;color:var(--muted);font-size:13px;user-select:none}
.options[open] summary{border-bottom:1px solid var(--line)}
.option-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;padding:15px}
.option-grid label,.inline{display:flex;flex-direction:column;gap:6px;font-size:12.5px;color:var(--muted)}
.inline{flex-direction:row;align-items:center;gap:7px}
select,input[type=number],input[type=text]{
  background:#0f1420;color:var(--fg);border:1px solid var(--line);border-radius:7px;padding:7px 9px;font:inherit
}
input[type=number]{width:92px}
input[type=range]{accent-color:var(--accent);width:100%}
.option-grid output{color:var(--accent-2);font-size:12px}

.progress-track{height:9px;border-radius:999px;background:#0f1420;overflow:hidden;border:1px solid var(--line)}
.progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .35s}
.progress-meta{display:flex;justify-content:space-between;margin-top:9px;font-size:12.5px;color:var(--muted)}

.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px;
  padding:11px 13px;background:#121722;border:1px solid var(--line);border-radius:10px}
.view-tabs{display:flex;gap:8px;margin-bottom:12px}
.tab{background:transparent;border:1px solid transparent;color:var(--muted)}
.tab.active{background:var(--panel-2);border-color:var(--line);color:var(--fg);font-weight:600}

.wave-wrap{position:relative;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#0f1420;margin-bottom:12px}
#waveform{display:block;width:100%;height:64px;cursor:pointer}
.view{animation:fade .2s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.roll-hint{margin-bottom:7px}
.roll-scroll{overflow:auto;border:1px solid var(--line);border-radius:10px;background:#0f1420;
  max-height:64vh;position:relative}
.roll-spacer{position:relative}
#roll,#staff{display:block;position:sticky;left:0;top:0}
#roll{cursor:crosshair}

.lane-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px;padding:14px}
.lane-grid label{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);cursor:pointer}
.swatch{width:11px;height:11px;border-radius:3px;flex:none}

.history{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.history li{display:flex;align-items:center;gap:12px;padding:10px 12px;background:#121722;
  border:1px solid var(--line);border-radius:9px;font-size:13px}
.history .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{font-size:11px;padding:2px 9px;border-radius:999px;background:#232c3d;color:var(--muted)}
.badge.done{background:rgba(63,208,138,.15);color:#3fd08a}
.badge.error{background:rgba(224,102,102,.15);color:var(--danger)}
.badge.running{background:rgba(77,143,224,.15);color:var(--accent)}

.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,26px);background:#232c3d;
  border:1px solid var(--line);color:var(--fg);padding:11px 20px;border-radius:10px;opacity:0;
  transition:.25s;pointer-events:none;z-index:100;box-shadow:0 14px 34px rgba(0,0,0,.4)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.bad{background:#3a1e22;border-color:#7a3238}
/* ─────────── touch / small screens ─────────── */
#roll,#staff{touch-action:pan-x pan-y}
.roll-scroll{-webkit-overflow-scrolling:touch;overscroll-behavior:contain}

@media (max-width:820px){
  .topbar{padding:11px 14px;flex-direction:column;align-items:stretch;gap:9px}
  .brand{gap:10px}
  .logo{font-size:25px}
  h1{font-size:17px}
  .brand p{font-size:11.5px}
  .health{width:100%;justify-content:center;font-size:11.5px}
  main{padding:14px 12px 70px;gap:13px}
  .card{padding:16px 14px;border-radius:11px}
  h2{font-size:15px}
  .option-grid{grid-template-columns:1fr;gap:12px}
  input[type=number]{width:100%}
  .inline{width:100%;justify-content:space-between}
  .dz-main{font-size:14px;line-height:1.9}
  .toolbar{gap:8px;padding:10px}
  .toolbar button{flex:1 1 auto;min-height:44px;padding:11px 12px;font-size:13px}
  .toolbar .inline{width:auto;flex:1 1 100%;justify-content:space-between}
  .view-tabs{gap:6px}
  .tab{flex:1;min-height:44px}
  .roll-hint{font-size:11px;line-height:1.6}
  .roll-scroll{max-height:46vh}
  .lane-grid{grid-template-columns:1fr 1fr;gap:10px}
  .lane-grid label{min-height:34px}
  #waveform{height:52px}
  .toast{width:calc(100% - 24px);text-align:center;font-size:13px}
  .progress-meta{font-size:12px}
  .history li{flex-wrap:wrap}
}
@media (max-width:430px){
  .lane-grid{grid-template-columns:1fr}
  .toolbar button{font-size:12.5px}
}