:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --danger: #f85149;
  --ok: #3fb950;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 20% -10%, #1f2a44 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.5;
}
main {
  max-width: 640px;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}
h1 {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 0.35rem;
}
.sub {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
}
label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.35rem; }
input[type="password"], input[type="file"] {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d1117;
  color: var(--text);
}
input[type="file"] { padding: 0.5rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #21262d, #161b22);
  color: var(--text);
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.95rem;
}
.btn-primary {
  border-color: #1f6feb;
  background: linear-gradient(180deg, #1f6feb, #1158c7);
}
.btn-primary:hover { filter: brightness(1.06); }
.row { margin-top: 1rem; display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: center; }
.err { color: var(--danger); font-size: 0.9rem; margin-top: 0.75rem; }
.ok { color: var(--ok); font-size: 0.9rem; margin-top: 0.75rem; }
.link-box.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9rem;
  word-break: break-all;
}
.link-box {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px dashed var(--border);
  background: #0d1117;
  word-break: break-all;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8rem;
}
/* Success page: value + copy button on one row */
.copy-field-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-top: 0.35rem;
}
.copy-field-row .link-box {
  margin-top: 0;
  flex: 1;
  min-width: 0;
}
.copy-field-row .btn {
  flex-shrink: 0;
  white-space: nowrap;
}
.success-once-callout {
  margin: 1.35rem 0 0;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  border: 1px solid rgba(88, 166, 255, 0.4);
  background: rgba(31, 111, 235, 0.14);
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.55;
}
.success-once-callout strong {
  color: #79c0ff;
}
@media (max-width: 520px) {
  .copy-field-row {
    flex-direction: column;
    align-items: stretch;
  }
  .copy-field-row .btn {
    align-self: flex-start;
  }
}
.badge {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
}
.gate-captcha-wrap { margin: 0 0 1rem; }
.gate-captcha-img {
  display: block;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d1117;
}
input[type="text"] {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d1117;
  color: var(--text);
  font-family: ui-monospace, monospace;
  letter-spacing: 0.2em;
}
.hero { margin-bottom: 1.5rem; }
.lede {
  color: var(--text);
  font-size: 1rem;
  line-height: 1.55;
  margin: 0 0 0.75rem;
}
.landing-card { margin-top: 0.5rem; }
.blurb {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 0 0 1.25rem;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.dropzone {
  margin: 0 0 0.85rem;
  padding: 1.5rem 1rem;
  border-radius: 10px;
  border: 1px dashed var(--border);
  background: #0d1117;
  text-align: center;
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.dropzone:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.25);
}
.dropzone-active {
  border-color: var(--accent);
  background: #111822;
}
.dropzone-title {
  margin: 0;
  font-weight: 600;
  font-size: 0.95rem;
}
.dropzone-hint {
  margin: 0.35rem 0;
  color: var(--muted);
  font-size: 0.85rem;
}
.dropzone-file {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  word-break: break-all;
}