:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --border: #334155;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --accent: #10b981;
  --danger: #ef4444;
  --warn: #f59e0b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header {
  margin-bottom: 40px;
  text-align: center;
  padding: 32px 24px;
  background: linear-gradient(145deg, var(--surface), rgba(30, 41, 59, 0.4));
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.header-logo {
  display: block;
  width: min(300px, 80vw);
  height: auto;
  margin: 24px auto 0;
  transition: transform 0.3s ease, filter 0.3s ease;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.2));
}

.header-logo:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.3));
}

header h1 {
  margin: 0 0 8px;
  font-size: 2.25rem;
  background: linear-gradient(to right, #f1f5f9, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

header p {
  margin: 0;
  color: var(--muted);
}

.header-links {
  margin-top: 8px !important;
  font-size: 0.9rem;
}

.header-links a {
  color: var(--primary);
  text-decoration: none;
}

.header-links a:hover {
  text-decoration: underline;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

.card h2 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

button, .btn {
  appearance: none;
  border: none;
  border-radius: 8px;
  padding: 12px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--primary);
  color: white;
  transition: all 0.2s ease;
  box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

button:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 8px -1px rgba(37, 99, 235, 0.3);
}
button:active:not(:disabled) {
  transform: translateY(1px);
}
button:disabled { opacity: 0.45; cursor: not-allowed; box-shadow: none; }

button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

button.danger { background: var(--danger); }

.status {
  padding: 10px 14px;
  border-radius: 8px;
  background: #0b1220;
  border: 1px solid var(--border);
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.85rem;
  min-height: 2.5em;
  white-space: pre-wrap;
  word-break: break-word;
}

.status.ok { border-color: var(--accent); }
.status.err { border-color: var(--danger); }
.status.warn { border-color: var(--warn); }

.progress-wrap {
  margin-top: 12px;
  display: none;
}

.progress-wrap.active { display: block; }

progress {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
}

progress::-webkit-progress-bar {
  background: #0b1220;
  border-radius: 999px;
}

progress::-webkit-progress-value {
  background: var(--accent);
  border-radius: 999px;
}

.log {
  max-height: 220px;
  overflow-y: auto;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.8rem;
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-top: 12px;
}

.log div { margin: 2px 0; }
.log .err { color: #fca5a5; }
.log .ok { color: #6ee7b7; }

ol.steps {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

ol.steps li { margin-bottom: 8px; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  background: #0b1220;
  border: 1px solid var(--border);
  color: var(--muted);
}

.hidden { display: none !important; }

.file-grid {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.file-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  font-size: 0.85rem;
}

.file-row label {
  color: var(--muted);
}

input[type="file"] {
  font-size: 0.8rem;
  color: var(--muted);
  max-width: 100%;
}

.disclaimer {
  margin: 16px 0 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--warn);
  border-radius: 8px;
  background: rgba(245, 158, 11, 0.08);
  color: var(--muted);
  font-size: 0.85rem;
}

.disclaimer strong {
  color: var(--text);
}

footer {
  margin-top: 32px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

footer a { color: var(--primary); }

@media (max-width: 480px) {
  .row { flex-direction: column; align-items: stretch; }
  button { width: 100%; }
}