:root {
  --bg: #0f172a;
  --card: #1e293b;
  --card-border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --success: #22c55e;
  --error: #ef4444;
  --warn: #f59e0b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(180deg, #0b1220 0%, #0f172a 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px;
}

header h1 {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 700;
}

.subtitle {
  color: var(--muted);
  margin: 0 0 32px;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.card ol {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

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

.field {
  display: block;
  margin-bottom: 20px;
}

.field span {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: #0b1220;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.field small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
}

.dropzone {
  border: 2px dashed var(--card-border);
  border-radius: 12px;
  padding: 36px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover,
.dropzone:focus,
.dropzone.dragover {
  border-color: var(--accent);
  background: rgba(56, 189, 248, 0.05);
  outline: none;
}

.dropzone-inner {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--muted);
}

.dropzone-inner strong { color: var(--text); font-size: 16px; }
.dropzone-inner small { font-size: 12px; }

.file-meta {
  margin-top: 20px;
  padding: 16px;
  background: #0b1220;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  font-size: 14px;
}

.file-meta > div { margin-bottom: 6px; }

.file-meta pre {
  margin: 8px 0 0;
  padding: 12px;
  max-height: 180px;
  overflow: auto;
  background: #020617;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  font-size: 12px;
  color: var(--muted);
  white-space: pre-wrap;
  word-break: break-word;
}

.hidden { display: none; }

.actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

button {
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #0b1220;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
}

button:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

button.secondary:hover:not(:disabled) {
  border-color: var(--muted);
  background: rgba(148, 163, 184, 0.05);
}

.status {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  min-height: 20px;
  display: none;
}

.status.show { display: block; }
.status.info { background: rgba(56, 189, 248, 0.1); color: var(--accent); border: 1px solid rgba(56, 189, 248, 0.25); }
.status.success { background: rgba(34, 197, 94, 0.1); color: var(--success); border: 1px solid rgba(34, 197, 94, 0.25); }
.status.error { background: rgba(239, 68, 68, 0.1); color: var(--error); border: 1px solid rgba(239, 68, 68, 0.25); }
.status.warn { background: rgba(245, 158, 11, 0.1); color: var(--warn); border: 1px solid rgba(245, 158, 11, 0.25); }

code {
  background: #0b1220;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--accent);
}

.site-footer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--card-border);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus {
  color: var(--accent-hover);
  text-decoration: underline;
  outline: none;
}