:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --success: #3fb950;
  --warning: #d29922;
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "Cascadia Code", "Fira Code", Consolas, monospace;
  --radius: 12px;
  --shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(88, 166, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88, 166, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent);
  pointer-events: none;
}

.shell {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
}

header {
  margin-bottom: 2.5rem;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(88, 166, 255, 0.12);
  border: 1px solid rgba(88, 166, 255, 0.25);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.lead {
  font-size: 1.125rem;
  color: var(--muted);
  margin: 0;
  max-width: 52ch;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.card h2 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1.25rem;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font: inherit;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.85rem 1.25rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #0d1117;
  border-color: var(--accent);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--muted);
}

.status {
  margin-top: 1.25rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  color: var(--muted);
  min-height: 2.75rem;
}

.status[data-state="loading"] {
  color: var(--accent);
  border-color: rgba(88, 166, 255, 0.35);
}

.status[data-state="ready"] {
  color: var(--success);
  border-color: rgba(63, 185, 80, 0.35);
}

.status[data-state="error"] {
  color: var(--warning);
  border-color: rgba(210, 153, 34, 0.35);
}

.alt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.alt-actions .btn {
  flex: 1 1 auto;
  font-size: 0.9rem;
  padding: 0.65rem 1rem;
}

footer {
  margin-top: 2.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

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

footer a:hover {
  text-decoration: underline;
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.user-panel {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.user-avatar {
  border-radius: 50%;
  border: 1px solid var(--border);
}

.user-login {
  flex: 1;
  font-weight: 600;
  font-family: var(--mono);
  font-size: 0.95rem;
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: none;
  padding: 0.35rem 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
}

.btn-ghost:hover {
  color: var(--text);
}

.sync-dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  background: var(--surface);
  color: var(--text);
  max-width: 28rem;
  box-shadow: var(--shadow);
}

.sync-dialog::backdrop {
  background: rgba(0, 0, 0, 0.65);
}

.sync-dialog-form {
  padding: 1.5rem;
}

.sync-dialog-form h3 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.sync-dialog-form p {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.sync-dialog-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

@media (min-width: 520px) {
  .actions-row {
    flex-direction: row;
  }

  .alt-actions .btn {
    flex: 1;
  }
}