:root {
  --bg: #101216;
  --card: #1a1e26;
  --border: #2b303c;
  --text: #e8eaf0;
  --muted: #9aa3b2;
  --primary: #3d8bfd;
  --primary-hover: #5a9dfd;
  --danger: #e05260;
  --success: #3fb96b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 12px 48px;
}

h1 { font-size: 1.5rem; margin: 12px 0; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }

a { color: var(--primary); }
.muted { color: var(--muted); font-size: 0.9rem; }
.center { text-align: center; }
hr { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
code { background: var(--bg); padding: 2px 6px; border-radius: 6px; }

/* Navigation */
nav {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  position: sticky;
  top: 0;
  z-index: 10;
}
nav .brand { font-weight: 700; color: var(--text); text-decoration: none; margin-right: auto; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1.4rem;
  line-height: 1;
  padding: 8px 12px;
  cursor: pointer;
}
.nav-links { display: flex; flex-wrap: wrap; gap: 4px; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
}
.nav-links a:hover { color: var(--text); background: var(--border); }

/* Smartphone: Menue eingeklappt, per Taste ausklappbar */
@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 2px;
    padding-top: 6px;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 13px 10px;
    font-size: 1.05rem;
    border-top: 1px solid var(--border);
    border-radius: 0;
  }
}

/* Karten */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin: 14px 0;
}

.auth-card { max-width: 400px; margin: 8vh auto; }
.auth-card h1 { text-align: center; }

/* Statistik-Karten */
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.stat { text-align: center; margin: 14px 0 0; }
.stat-value { font-size: 2.2rem; font-weight: 700; display: block; }
.stat-sub { font-size: 1.2rem; color: var(--muted); font-weight: 400; }
.stat-label { color: var(--muted); font-size: 0.9rem; }

/* Formulare */
label { display: block; margin: 12px 0 4px; color: var(--muted); font-size: 0.95rem; }
input:not([type="checkbox"]), select, textarea {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); border-color: transparent; }
input[type="file"] { padding: 9px; }
h3 { font-size: 1rem; margin: 4px 0 8px; }
.right { text-align: right; }
label.check {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  margin: 14px 0;
}
label.check input { width: 22px; height: 22px; accent-color: var(--primary); }

/* Buttons */
.btn {
  display: inline-block;
  border: 1px solid var(--border);
  background: var(--border);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  margin-top: 12px;
}
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-block { display: block; width: 100%; }
.btn-small { padding: 8px 12px; font-size: 0.9rem; margin-top: 0; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* Meldungen */
.flash {
  padding: 12px 14px;
  border-radius: 10px;
  margin: 12px 0;
  border: 1px solid var(--border);
}
.flash.success { background: rgba(63, 185, 107, 0.15); border-color: var(--success); }
.flash.error { background: rgba(224, 82, 96, 0.15); border-color: var(--danger); }

/* Tabellen */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.9rem; }
tr:last-child td { border-bottom: none; }

/* Status-Badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  white-space: nowrap;
}
.badge-online { background: rgba(63, 185, 107, 0.2); color: var(--success); }
.badge-offline { background: rgba(224, 82, 96, 0.2); color: var(--danger); }
.badge-muted { background: var(--border); color: var(--muted); }

/* 24h-Diagramm */
.chart {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 140px;
}
.chart-col { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.bar-wrap { height: 116px; display: flex; align-items: flex-end; }
.bar {
  width: 100%;
  min-height: 2px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
}
.chart-label {
  color: var(--muted);
  font-size: 0.7rem;
  text-align: center;
  height: 1.2em;
  overflow: visible;
}

/* Suche */
.search-status { font-size: 1.2rem; font-weight: 700; color: var(--muted); margin: 0 0 8px; }
.search-status.active { color: var(--success); }

/* Soundboard */
.board-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; }
.board-tab {
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  text-decoration: none;
}
.board-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.sound-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.sound-grid form { margin: 0; }
.sound-btn {
  width: 100%;
  margin-top: 0;
  min-height: 64px;
  word-break: break-word;
}
.board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.board-head h2 { margin: 0; }
.board-head form { margin: 0; }

/* Buzzer */
.buzzer-btn {
  width: 220px;
  height: 220px;
  max-width: 70vw;
  max-height: 70vw;
  border-radius: 50%;
  border: none;
  margin: 16px auto 8px;
  display: block;
  background: radial-gradient(circle at 35% 30%, #ff6b76, var(--danger) 60%, #a3313c);
  color: #fff;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 2px;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(224, 82, 96, 0.35);
}
.buzzer-btn:active { transform: scale(0.96); box-shadow: 0 4px 12px rgba(224, 82, 96, 0.35); }

/* Benutzerverwaltung */
.user-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.user-row:last-of-type { border-bottom: none; }
.user-name { flex: 1 1 100%; font-weight: 600; }
.inline-form { display: flex; gap: 8px; flex: 1 1 auto; align-items: center; }
.inline-form input:not([type="hidden"]) { flex: 1; min-width: 120px; }
.user-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.user-actions .inline-form { flex: 0 0 auto; }

@media (min-width: 560px) {
  .user-name { flex: 0 0 160px; }
}