:root {
  --bg: #0a0e14;
  --panel: #111820;
  --border: #1e2a3a;
  --cyan: #39c5cf;
  --magenta: #c678dd;
  --green: #98c379;
  --red: #e06c75;
  --yellow: #e5c07b;
  --blue: #61afef;
  --text: #abb2bf;
  --dim: #5c6370;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  position: relative;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(57, 197, 207, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 197, 207, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

.banner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 1.5rem 1rem 0.5rem;
}

.ascii {
  display: inline-block;
  margin: 0;
  font-size: clamp(0.45rem, 1.8vw, 0.65rem);
  line-height: 1.15;
  color: var(--cyan);
  text-shadow: 0 0 20px rgba(57, 197, 207, 0.25);
}

.tagline {
  color: var(--dim);
  font-size: 0.9rem;
  margin: 0.5rem 0 0;
}

.layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  gap: 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.25rem 2rem;
}

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.panel h2 {
  margin: 1rem 0 0.75rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--magenta);
}

.panel h2:first-child { margin-top: 0; }

.field { margin-bottom: 0.75rem; }
.field.row { display: flex; align-items: center; gap: 0.5rem; }

label { display: block; font-size: 0.85rem; color: var(--dim); margin-bottom: 0.35rem; }

.hint {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.75rem;
  color: var(--dim);
  line-height: 1.35;
}

input[type="text"],
input[type="number"],
textarea {
  width: 100%;
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.55rem 0.65rem;
  font-size: 0.9rem;
  font-family: ui-monospace, monospace;
}

textarea { resize: vertical; min-height: 4rem; }

.file-label {
  display: block;
  margin-bottom: 0.5rem;
  cursor: pointer;
}

.file-label input { display: none; }

.file-label span {
  display: inline-block;
  padding: 0.45rem 0.85rem;
  border: 1px dashed var(--border);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--cyan);
}

.file-label span:hover { border-color: var(--cyan); }

.file-name {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  color: var(--green);
  min-height: 1.1em;
}

.btn {
  width: 100%;
  margin-top: 1rem;
  padding: 0.75rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
}

.btn.primary {
  background: linear-gradient(135deg, var(--magenta), #7c3aed);
  color: #fff;
}

.btn.primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-row {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.btn-row .btn {
  margin-top: 0;
  flex: 1;
}

.btn.stop {
  background: linear-gradient(135deg, #e06c75, #be5046);
  color: #fff;
}

.btn.stop:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.error { color: var(--red); font-size: 0.85rem; margin-top: 0.75rem; }
.hidden { display: none !important; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.stat {
  text-align: center;
  padding: 0.65rem;
  border-radius: 8px;
  background: #0d1117;
  border: 1px solid var(--border);
}

.stat span { display: block; font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat small { font-size: 0.65rem; letter-spacing: 0.08em; opacity: 0.85; }
.stat.live span { color: var(--green); }
.stat.dead span { color: var(--red); }
.stat.unknown span { color: var(--yellow); }
.stat.captcha span { color: var(--cyan); }

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.progress-bar {
  flex: 1;
  height: 8px;
  background: #0d1117;
  border-radius: 4px;
  overflow: hidden;
}

#progressFill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  transition: width 0.2s ease;
}

#progressLabel {
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: var(--dim);
  min-width: 5rem;
  text-align: right;
}

.log {
  height: min(420px, 50vh);
  overflow-y: auto;
  background: #050608;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem;
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: 0.78rem;
  line-height: 1.45;
}

.log-line { margin: 0; padding: 0.1rem 0; }
.log-line .idx { color: var(--blue); }
.log-line .status-LIVE { color: var(--green); }
.log-line .status-DIE { color: var(--red); }
.log-line .status-UNKNOWN { color: var(--yellow); }
.log-line .status-CAPTCHA { color: var(--cyan); }
.log-line .status-TIMEOUT { color: var(--magenta); }

.downloads { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.downloads h3 { margin: 0 0 0.5rem; font-size: 0.85rem; color: var(--cyan); }

.dl-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.dl-links a {
  color: var(--blue);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.dl-links a:hover { border-color: var(--blue); }

.summary { font-size: 0.8rem; color: var(--dim); margin: 0.75rem 0 0; }