:root {
  --bg: #0b0d12;
  --surface: #161922;
  --surface-2: #1f2330;
  --border: #2a2f3d;
  --text: #e8eaf0;
  --text-dim: #8a92a6;
  --accent: #ff2e63;
  --accent-hover: #ff4f7c;
  --success: #2ecc71;
  --warning: #f39c12;
  --danger: #e74c3c;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

button {
  font: inherit;
  cursor: pointer;
  border-radius: var(--radius);
  padding: 9px 16px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  transition: background 120ms, border-color 120ms;
}
button:hover { background: var(--border); }
button:disabled { opacity: 0.4; cursor: not-allowed; }
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}
button.primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
button.ghost { background: transparent; }
button.danger { color: var(--danger); border-color: var(--danger); }

input[type="password"], input[type="text"], input[type="datetime-local"], select {
  font: inherit;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  width: 100%;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }

.muted { color: var(--text-dim); }
.error { color: var(--danger); margin-top: 8px; }

/* Login */
.screen { min-height: 100vh; }
#login { display: flex; align-items: center; justify-content: center; padding: 24px; }
.login-card {
  width: 100%; max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow);
}
.login-card h1 { margin: 0 0 8px; font-size: 22px; }
.login-card p { margin: 0 0 24px; }
.login-card form { display: flex; flex-direction: column; gap: 12px; }

/* Editor */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px;
  background: rgba(11, 13, 18, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-left h1 { margin: 0; font-size: 18px; }
.topbar-right { display: flex; gap: 8px; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-dim);
  font-size: 12px;
}
.badge.dirty { background: rgba(243, 156, 18, 0.15); color: var(--warning); }
.badge.saved { background: rgba(46, 204, 113, 0.15); color: var(--success); }

.banner {
  margin: 12px 20px 0;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 14px;
}
.banner.success { background: rgba(46, 204, 113, 0.15); color: var(--success); border: 1px solid rgba(46, 204, 113, 0.3); }
.banner.error { background: rgba(231, 76, 60, 0.15); color: var(--danger); border: 1px solid rgba(231, 76, 60, 0.3); }

main {
  max-width: 980px;
  margin: 24px auto;
  padding: 0 20px 60px;
  display: flex; flex-direction: column; gap: 14px;
}

.race {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 120ms;
}
.race.cancelled { opacity: 0.55; }
.race.dirty { border-color: var(--warning); }
.race.modified-original { border-color: var(--warning); }

.race-header {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  user-select: none;
}
.race-header:hover { background: var(--surface-2); }
.race-flag { font-size: 22px; line-height: 1; }
.race-title { flex: 1; min-width: 0; }
.race-title .name { font-weight: 600; }
.race-title .meta { color: var(--text-dim); font-size: 13px; }
.race-toggle { color: var(--text-dim); font-size: 13px; }
.chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  margin-left: 8px;
  background: var(--surface-2);
  color: var(--text-dim);
}
.chip.cancelled { background: rgba(231, 76, 60, 0.18); color: var(--danger); }
.chip.sprint { background: rgba(243, 156, 18, 0.18); color: var(--warning); }

.race-body {
  display: none;
  padding: 0 18px 18px;
  border-top: 1px solid var(--border);
}
.race.open .race-body { display: block; }

.race-actions {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin: 14px 0;
}

.session {
  display: grid;
  grid-template-columns: 100px 1fr 36px 130px;
  gap: 10px;
  align-items: center;
  padding: 8px 0;
}
.session.cancelled .session-type,
.session.cancelled input { opacity: 0.45; text-decoration: line-through; }
.session-type { color: var(--text-dim); font-size: 13px; }
.session-changed-from { color: var(--warning); font-size: 12px; padding-left: 8px; }
.session.cancelled .session-changed-from { color: var(--danger); text-decoration: none; }

.session-cancel {
  width: 32px; height: 32px;
  padding: 0;
  font-size: 14px; line-height: 1;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.session-cancel:hover { color: var(--danger); border-color: var(--danger); }
.session.cancelled .session-cancel { color: var(--success); border-color: var(--success); opacity: 1; }

/* Modal */
.modal {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  z-index: 100;
  padding: 20px;
}
.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  max-width: 520px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-card h2 { margin: 0 0 12px; font-size: 18px; }
.modal-card ul { margin: 12px 0; padding-left: 20px; line-height: 1.7; }
.modal-actions {
  display: flex; justify-content: flex-end; gap: 10px;
  margin-top: 18px;
}

.footer {
  text-align: center;
  padding: 20px;
  color: var(--text-dim);
  font-size: 12px;
}

@media (max-width: 600px) {
  .topbar { flex-direction: column; align-items: stretch; }
  .topbar-right { justify-content: space-between; }
  .session { grid-template-columns: 80px 1fr; }
  .session > input[type="datetime-local"] { grid-column: 1 / -1; }
}