@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700;800&family=Space+Grotesk:wght@500;700&display=swap');

:root{
  --bg:#0b0f0e;
  --panel:#101614;
  --line:#1e2b27;
  --green:#3ef2a1;
  --green-dim:#1c6b4d;
  --red:#ff5d5d;
  --text:#dcece5;
  --muted:#6f8b81;
}

*{box-sizing:border-box; margin:0; padding:0;}

body{
  background:var(--bg);
  color:var(--text);
  font-family:'JetBrains Mono', monospace;
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px;
  position:relative;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(62,242,161,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62,242,161,0.035) 1px, transparent 1px);
  background-size:36px 36px;
  pointer-events:none;
}

.scanline{
  position:fixed;
  left:0; right:0; height:120px;
  background:linear-gradient(to bottom, transparent, rgba(62,242,161,0.06), transparent);
  animation:sweep 6s linear infinite;
  pointer-events:none;
}

@keyframes sweep{
  0%{ top:-120px; }
  100%{ top:100vh; }
}

.wrap{
  width:100%;
  max-width:560px;
  position:relative;
  z-index:1;
}

.head{
  margin-bottom:28px;
}

.tag{
  font-size:11px;
  letter-spacing:2px;
  color:var(--green);
  opacity:0.8;
  margin-bottom:14px;
}

h1{
  font-family:'Space Grotesk', sans-serif;
  font-size:34px;
  font-weight:700;
  letter-spacing:-0.5px;
}

.sub{
  color:var(--muted);
  font-size:13px;
  margin-top:8px;
  line-height:1.5;
}

.panel{
  border:1px dashed var(--line);
  border-radius:10px;
  background:var(--panel);
  cursor:pointer;
  transition:border-color .2s ease, background .2s ease;
}

.panel.drag{
  border-color:var(--green);
  background:#0f1c17;
}

.drop-inner{
  padding:56px 24px;
  text-align:center;
}

.drop-icon{
  font-size:26px;
  color:var(--green);
  margin-bottom:10px;
}

.drop-text{
  font-size:14px;
}

.link{
  color:var(--green);
  text-decoration:underline;
}

.drop-hint{
  margin-top:10px;
  font-size:11px;
  color:var(--muted);
}

.quote{
  margin-top:14px;
  font-size:11px;
  font-style:italic;
  color:var(--green-dim);
  min-height:16px;
  opacity:0;
  animation:fadeQuote 0.6s ease forwards;
}

@keyframes fadeQuote{
  from{ opacity:0; transform:translateY(4px); }
  to{ opacity:1; transform:translateY(0); }
}

.algo-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:14px;
}

.algo-row label{
  margin-bottom:0;
}

#algoSelect{
  background:#0b1210;
  color:var(--text);
  border:1px solid var(--line);
  border-radius:6px;
  padding:8px 10px;
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  outline:none;
}

#algoSelect:focus{
  border-color:var(--green-dim);
}

.result{
  margin-top:20px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--panel);
  padding:22px;
  opacity:0;
  transform:translateY(10px);
  animation:riseIn 0.4s ease forwards;
}

@keyframes riseIn{
  to{ opacity:1; transform:translateY(0); }
}

.file-row{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  border-bottom:1px solid var(--line);
  padding-bottom:14px;
  margin-bottom:16px;
}

.file-name{
  font-size:13px;
  font-weight:700;
  word-break:break-all;
}

.file-size{
  font-size:11px;
  color:var(--muted);
  white-space:nowrap;
  margin-left:12px;
}

.hash-row{
  margin-bottom:16px;
}

label{
  display:block;
  font-size:10px;
  letter-spacing:1.5px;
  color:var(--muted);
  text-transform:uppercase;
  margin-bottom:6px;
}

.opt{
  text-transform:none;
  letter-spacing:0;
  opacity:0.7;
}

.hash-box{
  font-size:12px;
  color:var(--green);
  background:#0b1210;
  border:1px solid var(--line);
  border-radius:6px;
  padding:10px 12px;
  word-break:break-all;
  line-height:1.5;
  animation:glow 1.2s ease;
}

@keyframes glow{
  0%{ box-shadow:0 0 0 rgba(62,242,161,0); }
  40%{ box-shadow:0 0 14px rgba(62,242,161,0.35); }
  100%{ box-shadow:0 0 0 rgba(62,242,161,0); }
}

#expectedHash{
  width:100%;
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  color:var(--text);
  background:#0b1210;
  border:1px solid var(--line);
  border-radius:6px;
  padding:10px 12px;
  outline:none;
}

#expectedHash:focus{
  border-color:var(--green-dim);
}

.status{
  min-height:20px;
  font-size:12px;
  font-weight:700;
  letter-spacing:0.5px;
  margin-bottom:16px;
}

.status.match{ color:var(--green); }
.status.mismatch{ color:var(--red); }

.reset{
  width:100%;
  padding:12px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:6px;
  color:var(--muted);
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  cursor:pointer;
  transition:border-color .2s ease, color .2s ease;
}

.reset:hover{
  border-color:var(--green);
  color:var(--green);
}

@media (max-width:480px){
  h1{ font-size:26px; }
  .drop-inner{ padding:40px 16px; }
}

.scan-meta{
  font-size:11px;
  color:var(--muted);
  margin-bottom:16px;
}

.btn-row{
  display:flex;
  gap:10px;
}

.btn-row .reset{
  flex:1;
}

.compare-panel{
  margin-top:20px;
  cursor:default;
  padding:20px;
}

.compare-title{
  font-size:12px;
  letter-spacing:1px;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:14px;
}

.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}

.compare-slot{
  border:1px dashed var(--line);
  border-radius:8px;
  cursor:pointer;
  transition:border-color .2s ease;
}

.compare-slot:hover{
  border-color:var(--green-dim);
}

.slot-inner{
  padding:22px 12px;
  text-align:center;
}

.slot-label{
  font-size:10px;
  letter-spacing:1.5px;
  color:var(--muted);
  text-transform:uppercase;
  margin-bottom:8px;
}

.slot-name{
  font-size:12px;
  word-break:break-all;
}

.compare-panel .status{
  margin-top:16px;
  margin-bottom:0;
}

.history-panel{
  margin-top:20px;
}

.history-title{
  font-size:12px;
  letter-spacing:1px;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:10px;
}

.history-list{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.history-item{
  border:1px solid var(--line);
  border-radius:8px;
  background:var(--panel);
  padding:10px 14px;
  font-size:11px;
  color:var(--muted);
  opacity:0;
  transform:translateX(-6px);
  animation:slideIn 0.35s ease forwards;
}

@keyframes slideIn{
  to{ opacity:1; transform:translateX(0); }
}

.history-item .h-name{
  color:var(--text);
  font-weight:700;
}

.history-item .h-hash{
  color:var(--green);
  word-break:break-all;
  display:block;
  margin-top:4px;
}