:root {
  color-scheme: dark;
  --bg: #14181c;
  --bg-alt: #1c2228;
  --fg: #e8ecef;
  --fg-dim: #9aa5ad;
  --accent: #5cc76b;
  --accent-dim: #3a8a45;
  --danger: #d9534f;
  --border: #2a3138;
  --radius: 10px;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

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

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  color: var(--fg);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
}

.brand span { color: var(--accent); }

nav a {
  color: var(--fg-dim);
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
}

nav a:hover, nav a[aria-current="page"] { color: var(--fg); }

.hero {
  text-align: center;
  padding: 3.5rem 1.25rem 2.5rem;
}

.hero h1 {
  font-size: 2.75rem;
  margin: 0 0 0.25rem;
}

.tagline {
  color: var(--fg-dim);
  margin: 0 0 1.75rem;
}

.ip-box {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.6rem 0.6rem 1.1rem;
}

.ip-box code {
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

#copy-btn {
  background: var(--accent);
  color: #0b1c0f;
  border: 0;
  border-radius: 6px;
  padding: 0.5rem 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

#copy-btn:hover { background: #6fd67d; }

.status {
  margin-top: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--fg-dim);
  font-size: 0.95rem;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--fg-dim);
  display: inline-block;
}

.dot.online { background: var(--accent); }
.dot.offline { background: var(--danger); }

.join { padding: 2rem 1.25rem; }

.join h2, .map-teaser h2 {
  text-align: center;
  margin-bottom: 1.25rem;
}

.join-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 600px) {
  .join-grid { grid-template-columns: 1fr; }
}

.join-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.join-card h3 { margin-top: 0; }

.join-card code {
  display: inline-block;
  margin-top: 0.5rem;
  background: var(--bg);
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
}

.map-teaser {
  text-align: center;
  padding: 2.5rem 1.25rem 3.5rem;
}

.map-teaser p { color: var(--fg-dim); }

.button {
  display: inline-block;
  margin-top: 0.75rem;
  background: var(--accent);
  color: #0b1c0f;
  text-decoration: none;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
}

.button:hover { background: #6fd67d; }

footer {
  border-top: 1px solid var(--border);
  color: var(--fg-dim);
  text-align: center;
  padding: 1.5rem 1.25rem;
  font-size: 0.85rem;
}

/* --- Hidden admin panel (Ctrl+Alt+F12, see public/admin.js) ------------ */

.admin-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  align-items: flex-start;
  justify-content: center;
  overflow-y: auto;
  padding: 2rem 1.25rem;
}

.admin-overlay.open {
  display: flex;
}

.admin-panel {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--fg);
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  padding: 1.5rem;
  width: 100%;
  max-width: 760px;
}

.admin-panel--login {
  max-width: 320px;
}

.admin-panel h2 {
  margin: 0 0 1rem;
  font-size: 1.2rem;
}

.admin-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.admin-panel-header h2 {
  margin: 0;
}

.admin-btn-text {
  background: none;
  border: none;
  color: var(--fg-dim);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.3rem 0.5rem;
}

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

.admin-section {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  margin-top: 1rem;
}

.admin-section:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

#admin-refresh-section {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.admin-section h3 {
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
}

.admin-hint,
.admin-loading {
  color: var(--fg-dim);
  font-size: 0.85rem;
}

.admin-error {
  color: var(--danger);
  font-size: 0.85rem;
}

.admin-panel input[type='password'] {
  width: 100%;
  box-sizing: border-box;
  padding: 0.55rem 0.7rem;
  margin-bottom: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.9rem;
  font-family: inherit;
}

.admin-panel button[type='submit'] {
  width: 100%;
  background: var(--accent);
  color: #0b1c0f;
  border: 0;
  border-radius: 6px;
  padding: 0.55rem 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.admin-action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.admin-btn {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
  cursor: pointer;
}

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

.admin-btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.admin-console {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem 0.75rem;
  font-size: 0.8rem;
  color: var(--fg-dim);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0 0 0.6rem;
  max-height: 140px;
  overflow-y: auto;
}

.admin-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.6rem;
}

.admin-stat {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem;
  text-align: center;
}

.admin-stat-value {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
}

.admin-stat-label {
  display: block;
  font-size: 0.72rem;
  color: var(--fg-dim);
  margin-top: 0.15rem;
}

.admin-table-wrap {
  overflow-x: auto;
  max-height: 320px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  white-space: nowrap;
}

.admin-table th,
.admin-table td {
  padding: 0.4rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.admin-table th {
  position: sticky;
  top: 0;
  background: var(--bg-alt);
  color: var(--fg-dim);
  font-weight: 600;
}

.admin-table tbody tr:hover {
  background: var(--bg);
}