:root {
  --bg: #0f172a;
  --card: #111827;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22c55e;
  --accent-2: #16a34a;
  --danger: #ef4444;
  --border: #1f2937;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #1e293b 0%, var(--bg) 45%);
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  min-height: 100vh;
}

.container {
  width: min(860px, 94vw);
  margin: 32px auto;
  display: grid;
  gap: 16px;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: 1.8rem;
}

.subtitle {
  color: var(--muted);
  margin-top: -8px;
}

.card {
  background: color-mix(in srgb, var(--card) 92%, white 8%);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  display: grid;
  gap: 10px;
}

form {
  display: grid;
  gap: 10px;
}

label {
  font-size: 0.9rem;
  color: var(--muted);
}

input[type="file"],
input[type="text"],
select,
input[readonly] {
  width: 100%;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
}

button {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 600;
  color: white;
  background: linear-gradient(130deg, var(--accent), var(--accent-2));
  cursor: pointer;
}

button:hover {
  filter: brightness(1.08);
}

.hint {
  margin: 0;
  color: var(--muted);
}

code {
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
}

.progress-wrap {
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 999px;
  height: 12px;
  overflow: hidden;
}

#progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #22c55e, #4ade80);
  transition: width 0.3s ease;
}

#status {
  font-weight: 600;
}

#progress-text {
  color: var(--muted);
}

.error {
  color: var(--danger);
  font-weight: 600;
  min-height: 1.2rem;
}

.hidden {
  display: none;
}

.link-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

#open-link {
  color: #86efac;
}

pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  color: #cbd5e1;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.86rem;
}

@media (max-width: 640px) {
  .container {
    margin: 18px auto;
  }
}