:root {
  color-scheme: light dark;
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2e38;
  --text: #e7e9ee;
  --muted: #9aa1ae;
  --accent: #5b8cff;
  --ok: #3fc37a;
  --error: #ff5c5c;
  --warn: #e3b341;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

header {
  margin-bottom: 24px;
}

header h1 {
  margin: 0 0 4px;
  font-size: 1.6rem;
}

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

.banner {
  background: #3a2a2a;
  border: 1px solid var(--error);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
}

.step h2 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.step h3 {
  margin: 18px 0 6px;
  font-size: 0.92rem;
  color: var(--text);
}

.step h2 .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.8rem;
}

select,
button,
input[type='file'] {
  font-size: 0.95rem;
  font-family: inherit;
}

select {
  width: 100%;
  padding: 8px 10px;
  background: #0f1115;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
}

button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 9px 16px;
  cursor: pointer;
  margin-right: 8px;
  margin-top: 8px;
}

button:disabled {
  background: var(--border);
  color: var(--muted);
  cursor: not-allowed;
}

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

#manual-bootloader-button:not([hidden]) {
  background: var(--warn);
  color: #1a1400;
  border: none;
  font-weight: 600;
  animation: urgent-pulse 1s ease-in-out infinite;
}

@keyframes urgent-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(227, 179, 65, 0.6); }
  50% { box-shadow: 0 0 0 8px rgba(227, 179, 65, 0); }
}

.muted {
  color: var(--muted);
  font-size: 0.88rem;
}

.note {
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: 6px;
  background: #3a3120;
  border: 1px solid var(--warn);
  font-size: 0.88rem;
}

.status {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

.status--busy {
  color: var(--accent);
}

.status--ok {
  color: var(--ok);
}

.status--error {
  color: var(--error);
}

progress {
  width: 100%;
  height: 10px;
  margin-top: 10px;
  accent-color: var(--accent);
}

#log,
.mono-panel {
  margin-top: 12px;
  max-height: 180px;
  overflow-y: auto;
  background: #0a0c10;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.78rem;
  color: var(--muted);
}

.mono-panel:empty::before {
  content: '(nothing yet)';
  opacity: 0.6;
}

.mono-panel .entry {
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.mono-panel .entry:last-child {
  border-bottom: none;
}

.mono-panel .entry strong {
  color: var(--text);
}

.details-hint {
  margin-top: 12px;
  font-size: 0.85rem;
}

.details-hint summary {
  cursor: pointer;
  color: var(--accent);
}

.details-hint p {
  margin: 8px 0 0;
}

.hint {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

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

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