:root{
  --bg-1:#0b1020;
  --bg-2:#141b34;
  --accent:#5b8cff;
  --accent-2:#8f6bff;
  --card:rgba(255,255,255,0.06);
  --card-border:rgba(255,255,255,0.12);
  --text:#eef1fb;
  --text-dim:#9aa3c4;
  --good:#31d0a0;
  --warn:#ffb648;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  min-height:100vh;
  font-family:'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background:radial-gradient(circle at 20% 20%, var(--bg-2), var(--bg-1) 60%);
  color:var(--text);
  overflow-x:hidden;
  position:relative;
}

.bg-orbs{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.35;animation:float 16s ease-in-out infinite;}
.orb1{width:420px;height:420px;background:var(--accent);top:-120px;left:-100px;animation-delay:0s;}
.orb2{width:360px;height:360px;background:var(--accent-2);bottom:-140px;right:-80px;animation-delay:3s;}
.orb3{width:280px;height:280px;background:#31d0a0;top:40%;left:60%;animation-delay:6s;}

@keyframes float{
  0%,100%{transform:translate(0,0) scale(1);}
  50%{transform:translate(30px,-40px) scale(1.08);}
}

.topbar{
  position:relative;z-index:2;
  display:flex;align-items:center;
  padding:22px 40px;
}
.brand{display:flex;align-items:center;gap:14px;}
.brand-mark{
  width:46px;height:46px;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  display:flex;align-items:center;justify-content:center;
  font-weight:800;letter-spacing:.5px;
  box-shadow:0 8px 24px rgba(91,140,255,.35);
}
.brand-text strong{display:block;font-size:15px;}
.brand-text span{display:block;font-size:12px;color:var(--text-dim);}

.wrap{position:relative;z-index:2;max-width:980px;margin:0 auto;padding:20px 24px 60px;}

.hero{text-align:center;padding:40px 10px 20px;animation:fadeUp .8s ease both;}
.hero h1{font-size:38px;line-height:1.15;margin:0 0 14px;font-weight:800;}
.hero .accent{
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p{color:var(--text-dim);max-width:620px;margin:0 auto;font-size:15.5px;}

@keyframes fadeUp{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:translateY(0);}}

.panel{
  margin-top:30px;
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:22px;
  padding:32px;
  backdrop-filter:blur(14px);
  box-shadow:0 20px 60px rgba(0,0,0,.35);
  animation:fadeUp .9s .1s ease both;
}

.drop-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
@media (max-width:760px){.drop-grid{grid-template-columns:1fr;}}

.dropzone{
  border:2px dashed var(--card-border);
  border-radius:16px;
  padding:28px 18px;
  text-align:center;
  cursor:pointer;
  transition:border-color .25s, transform .2s, background .25s;
  background:rgba(255,255,255,.02);
}
.dropzone:hover{transform:translateY(-3px);}
.dropzone.dragover{
  border-color:var(--accent);
  background:rgba(91,140,255,.08);
  box-shadow:0 0 0 4px rgba(91,140,255,.12);
}
.dropzone.filled{border-color:var(--good);}
.dz-icon{color:var(--accent);margin-bottom:10px;transition:transform .25s;}
.dropzone:hover .dz-icon{transform:scale(1.12) rotate(-4deg);}
.dz-title{font-weight:700;font-size:15px;margin-bottom:4px;}
.dz-sub{font-size:12.5px;color:var(--text-dim);}
.dz-filelist{margin-top:12px;font-size:12.5px;color:var(--text);text-align:left;max-height:110px;overflow-y:auto;}
.dz-filelist div{
  padding:4px 8px;margin-bottom:4px;border-radius:8px;
  background:rgba(255,255,255,.06);
  display:flex;justify-content:space-between;gap:8px;
}

.btn-run{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;gap:10px;
  width:100%;margin-top:28px;padding:16px 20px;
  border:none;border-radius:14px;
  font-size:16px;font-weight:700;letter-spacing:.2px;
  color:#fff;cursor:pointer;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transition:transform .18s ease, box-shadow .18s ease, opacity .2s;
  box-shadow:0 10px 30px rgba(91,140,255,.30);
}
.btn-run:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-run:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(91,140,255,.42);}
.btn-run:not(:disabled):active{transform:translateY(0px) scale(.98);}

.btn-run-spinner{
  width:18px;height:18px;border-radius:50%;
  border:2.5px solid rgba(255,255,255,.4);
  border-top-color:#fff;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

.ripple-holder{position:absolute;inset:0;border-radius:14px;overflow:hidden;pointer-events:none;}
.ripple{
  position:absolute;border-radius:50%;
  background:rgba(255,255,255,.5);
  transform:scale(0);
  animation:ripple .6s ease-out;
}
@keyframes ripple{to{transform:scale(4);opacity:0;}}

.error-box{
  margin-top:16px;padding:12px 16px;border-radius:12px;
  background:rgba(255,80,80,.12);border:1px solid rgba(255,80,80,.35);
  color:#ffb3b3;font-size:13.5px;
  animation:fadeUp .3s ease both;
}

.progress-box{margin-top:22px;animation:fadeUp .4s ease both;}
.progress-bar{height:8px;border-radius:6px;background:rgba(255,255,255,.08);overflow:hidden;}
.progress-fill{
  height:100%;width:0%;border-radius:6px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transition:width .4s ease;
}
.progress-label{margin-top:8px;font-size:12.5px;color:var(--text-dim);text-align:center;}

.results{margin-top:26px;text-align:center;animation:fadeUp .5s ease both;}
.result-cards{display:flex;gap:16px;justify-content:center;margin-bottom:20px;flex-wrap:wrap;}
.result-card{
  flex:1;min-width:170px;padding:20px;border-radius:16px;
  background:rgba(255,255,255,.05);border:1px solid var(--card-border);
}
.result-card.warn .result-number{color:var(--warn);}
.result-number{font-size:34px;font-weight:800;color:var(--good);}
.result-label{font-size:12.5px;color:var(--text-dim);margin-top:4px;}

.btn-download{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:12px;
  background:var(--good);color:#04231a;font-weight:700;text-decoration:none;
  transition:transform .18s ease, box-shadow .18s ease;
  box-shadow:0 10px 26px rgba(49,208,160,.30);
}
.btn-download:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(49,208,160,.4);}

.foot{
  text-align:center;color:var(--text-dim);font-size:12px;
  margin-top:40px;padding-bottom:10px;
}