:root{
  --bg:#0b1020;
  --card:rgba(20,27,48,.72);
  --card-brd:rgba(120,140,200,.16);
  --ink:#eaf0ff;
  --ink-dim:#9aa8cc;
  --accent:#6d8bff;
  --accent-2:#5ce1c8;
  --grad:linear-gradient(120deg,#6d8bff 0%,#8b6dff 45%,#5ce1c8 100%);
  --danger:#ff7a8a;
  --ok:#4fd18b;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--ink);
  min-height:100vh;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
.mono{font-family:'JetBrains Mono',ui-monospace,monospace}

/* ---------- animated background ---------- */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;background:
  radial-gradient(1200px 700px at 80% -10%,rgba(109,139,255,.18),transparent 60%),
  radial-gradient(900px 600px at 0% 100%,rgba(92,225,200,.12),transparent 60%),var(--bg);}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;animation:float 18s ease-in-out infinite}
.orb-1{width:420px;height:420px;background:#5060ff;top:-80px;left:-60px}
.orb-2{width:360px;height:360px;background:#5ce1c8;bottom:-100px;right:-40px;animation-delay:-6s}
.orb-3{width:300px;height:300px;background:#9a5cff;top:40%;left:60%;animation-delay:-11s}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(40px,-30px) scale(1.08)}66%{transform:translate(-30px,20px) scale(.95)}}
.grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(circle at 50% 30%,#000,transparent 75%)}

/* ---------- layout ---------- */
.wrap{max-width:920px;margin:0 auto;padding:56px 22px 80px}
.hero{text-align:center;margin-bottom:34px;animation:rise .7s cubic-bezier(.2,.7,.2,1) both}
.badge{display:inline-block;font-size:13px;font-weight:600;color:var(--ink-dim);
  border:1px solid var(--card-brd);background:rgba(255,255,255,.03);padding:6px 14px;border-radius:999px;margin-bottom:22px}
h1{font-size:clamp(30px,5.4vw,52px);line-height:1.06;font-weight:800;margin:0 0 16px;letter-spacing:-.02em}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{max-width:620px;margin:0 auto;color:var(--ink-dim);font-size:17px;line-height:1.6}
.sub code{color:var(--accent-2);font-family:'JetBrains Mono',monospace;font-size:.92em}

.card{background:var(--card);border:1px solid var(--card-brd);border-radius:20px;
  backdrop-filter:blur(14px);box-shadow:0 24px 60px -30px rgba(0,0,0,.7);
  animation:rise .7s .1s cubic-bezier(.2,.7,.2,1) both}

/* ---------- mode switch ---------- */
.switch{position:relative;display:flex;gap:4px;width:max-content;margin:0 auto 20px;padding:5px;
  background:rgba(255,255,255,.04);border:1px solid var(--card-brd);border-radius:999px;
  animation:rise .7s .05s cubic-bezier(.2,.7,.2,1) both}
.seg{position:relative;z-index:1;border:none;background:none;color:var(--ink-dim);cursor:pointer;
  font:inherit;font-weight:600;font-size:14px;padding:9px 20px;border-radius:999px;transition:color .25s}
.seg.active{color:#0b1020}
.seg-glider{position:absolute;z-index:0;top:5px;left:5px;height:calc(100% - 10px);border-radius:999px;
  background:var(--grad);transition:transform .3s cubic-bezier(.4,1.3,.5,1),width .3s cubic-bezier(.4,1.3,.5,1);
  box-shadow:0 6px 18px -8px rgba(109,139,255,.8)}

/* ---------- drop zone ---------- */
.drop-card{padding:14px}
.drop{border:2px dashed rgba(140,160,220,.3);border-radius:14px;padding:52px 24px;text-align:center;
  transition:.25s;cursor:pointer;position:relative}
.drop:hover{border-color:var(--accent);background:rgba(109,139,255,.06)}
.drop.drag{border-color:var(--accent-2);background:rgba(92,225,200,.09);transform:scale(1.01)}
.drop-icon{color:var(--accent);margin-bottom:14px;display:flex;justify-content:center;animation:bob 3s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-7px)}}
.drop-text{font-size:18px;color:var(--ink)}
.drop-text .or{display:block;margin-top:6px;color:var(--ink-dim);font-size:15px}
.link{background:none;border:none;color:var(--accent-2);font:inherit;cursor:pointer;text-decoration:underline;padding:0}
.drop-hint{margin-top:14px;color:var(--ink-dim);font-size:13px}

/* ---------- result card ---------- */
.result-card{margin-top:22px;padding:22px}
.hidden{display:none}
.file-row{display:flex;align-items:center;gap:14px;padding-bottom:16px;border-bottom:1px solid var(--card-brd)}
.file-ic{font-size:26px}
.file-meta{flex:1;min-width:0}
.file-name{font-weight:700;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-sub{color:var(--ink-dim);font-size:13px;margin-top:2px}
.ghost{background:rgba(255,255,255,.05);border:1px solid var(--card-brd);color:var(--ink-dim);
  width:34px;height:34px;border-radius:9px;cursor:pointer;font-size:15px;transition:.2s}
.ghost:hover{color:var(--ink);background:rgba(255,122,138,.14);border-color:var(--danger)}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin:18px 0}
.stat{background:rgba(255,255,255,.03);border:1px solid var(--card-brd);border-radius:12px;padding:14px 16px;animation:rise .5s both}
.stat .num{font-size:26px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lab{font-size:12px;color:var(--ink-dim);margin-top:2px;text-transform:uppercase;letter-spacing:.05em}

.preview{margin:6px 0 18px;max-height:280px;overflow:auto;border:1px solid var(--card-brd);border-radius:12px}
.preview table{width:100%;border-collapse:collapse;font-size:13px}
.preview th{position:sticky;top:0;background:#161d34;color:var(--ink-dim);text-align:left;padding:10px 12px;font-weight:600;z-index:1}
.preview td{padding:9px 12px;border-top:1px solid rgba(255,255,255,.05);color:var(--ink);vertical-align:top}
.preview tr{animation:rowIn .4s both}
.pill{display:inline-block;font-size:11px;padding:2px 8px;border-radius:999px;background:rgba(109,139,255,.16);color:#b9c6ff;font-family:'JetBrains Mono',monospace;white-space:nowrap}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:9px;vertical-align:middle}

/* ---------- actions ---------- */
.actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.primary{position:relative;background:var(--grad);border:none;color:#0b1020;font-weight:700;font-size:16px;
  padding:14px 26px;border-radius:12px;cursor:pointer;display:inline-flex;align-items:center;gap:10px;
  transition:.2s;box-shadow:0 12px 30px -12px rgba(109,139,255,.7)}
.primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 18px 40px -14px rgba(109,139,255,.85)}
.primary:disabled{opacity:.5;cursor:not-allowed}
.primary.loading .btn-label{opacity:.7}
.spinner{width:16px;height:16px;border:2.5px solid rgba(11,16,32,.35);border-top-color:#0b1020;border-radius:50%;animation:spin .7s linear infinite}
.note{color:var(--ink-dim);font-size:13px}
.note.err{color:var(--danger)}
.note.ok{color:var(--ok)}

/* ---------- features ---------- */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:34px}
.feat{background:var(--card);border:1px solid var(--card-brd);border-radius:16px;padding:20px;animation:rise .7s both}
.feat .fi{font-size:24px;margin-bottom:10px}
.feat h3{margin:0 0 6px;font-size:16px}
.feat p{margin:0;color:var(--ink-dim);font-size:13.5px;line-height:1.55}

.foot{text-align:center;color:var(--ink-dim);font-size:13px;margin-top:44px}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:30px;transform:translate(-50%,140%);background:#161d34;
  border:1px solid var(--card-brd);color:var(--ink);padding:13px 20px;border-radius:12px;font-size:14px;
  box-shadow:0 20px 50px -20px rgba(0,0,0,.8);transition:.4s cubic-bezier(.2,.7,.2,1);z-index:50;max-width:90vw}
.toast.show{transform:translate(-50%,0)}
.toast.ok{border-color:var(--ok)}
.toast.err{border-color:var(--danger)}

@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes rowIn{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:none}}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}