:root {
  --ink: #0F1218;
  --cyan: #00E5FF;
  --cyan-dark: #00B8CC;
  --cyan-50: #E8FCFF;
  --white: #FFFFFF;
  --gray-500: #5B6573;
  --gray-100: #F2F4F7;
  --gray-200: #E4E7EC;
  --red: #DC2626;
  --green: #16A34A;
  --yellow: #D97706;
  --blue: #2563EB;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  color: var(--ink);
  background: var(--gray-100);
}

header {
  background: var(--ink);
  color: var(--white);
  padding: 20px 24px;
  border-bottom: 3px solid var(--cyan);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon { font-size: 42px; }

.logo h1 { font-size: 28px; font-weight: 800; line-height: 1.1; }
.subtitle { color: #9AA3B2; font-size: 14px; margin-top: 4px; }

.header-stats {
  display: flex;
  gap: 16px;
}

.stat-card {
  background: rgba(255,255,255,0.1);
  padding: 12px 20px;
  border-radius: 8px;
  text-align: center;
  min-width: 120px;
}

.stat-value { font-size: 24px; font-weight: 700; color: var(--cyan); }
.stat-label { font-size: 12px; color: #9AA3B2; margin-top: 4px; }

.tabs {
  background: var(--white);
  padding: 0 24px;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 10;
}

.tab-btn {
  background: none;
  border: none;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
}

.tab-btn:hover { color: var(--ink); background: var(--gray-100); }
.tab-btn.active { color: var(--cyan-dark); border-bottom-color: var(--cyan); }

main { max-width: 1400px; margin: 0 auto; padding: 24px; }

.tab-content { display: none; }
.tab-content.active { display: block; }

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.card {
  background: var(--white);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.card h2 { font-size: 20px; font-weight: 700; margin-bottom: 16px; }

.map-container {
  height: 400px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

.ams-point {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  cursor: pointer;
  border: 3px solid white;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.ams-point.online { background: var(--green); }
.ams-point.offline { background: var(--red); }

.alerts-list { max-height: 400px; overflow-y: auto; }

.alert-item {
  padding: 12px;
  border-left: 4px solid var(--red);
  background: var(--gray-100);
  margin-bottom: 12px;
  border-radius: 4px;
}

.alert-item.confirmed { border-left-color: var(--yellow); }
.alert-item.closed { border-left-color: var(--green); opacity: 0.6; }

.alert-header { display: flex; justify-content: space-between; margin-bottom: 8px; }
.alert-title { font-weight: 600; }
.alert-time { color: var(--gray-500); font-size: 13px; }
.alert-details { font-size: 14px; color: var(--gray-500); }

.toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filter-group { display: flex; align-items: center; gap: 8px; }
.filter-group label { font-weight: 600; }

select, input[type="text"] {
  padding: 10px 14px;
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  font-size: 14px;
}

button {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary { background: var(--cyan); color: var(--ink); }
.btn-primary:hover { background: var(--cyan-dark); }

.btn-secondary { background: var(--gray-200); color: var(--ink); }
.btn-secondary:hover { background: var(--gray-500); color: white; }

.table-container {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

table { width: 100%; border-collapse: collapse; }
th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--gray-200); }
th { background: var(--gray-100); font-weight: 600; font-size: 13px; text-transform: uppercase; color: var(--gray-500); }
tr:hover { background: var(--cyan-50); }

.status-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.status-new { background: #FEE2E2; color: var(--red); }
.status-confirmed { background: #FEF3C7; color: var(--yellow); }
.status-closed { background: #D1FAE5; color: var(--green); }
.status-online { background: #D1FAE5; color: var(--green); }
.status-offline { background: #FEE2E2; color: var(--red); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 8px; }
.form-group input, .form-group select { width: 100%; padding: 10px; border: 1px solid var(--gray-200); border-radius: 6px; }

.coords-row { display: flex; gap: 12px; }
.coords-row input { flex: 1; }

.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

.modal.active { display: flex; }

.modal-content {
  background: var(--white);
  border-radius: 12px;
  padding: 32px;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-content h2 { margin-bottom: 20px; }

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}

.simulate-form { max-width: 500px; }
.result-box {
  margin-top: 20px;
  padding: 16px;
  border-radius: 8px;
  display: none;
}

.result-box.success { background: #D1FAE5; border: 1px solid var(--green); display: block; }
.result-box.error { background: #FEE2E2; border: 1px solid var(--red); display: block; }

.stats-container { padding: 20px 0; }
.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-200);
}
.stat-row:last-child { border-bottom: none; }
.stat-row .label { color: var(--gray-500); }
.stat-row .value { font-weight: 700; font-size: 18px; }

@media (max-width: 1024px) {
  .dashboard-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .header-content { flex-direction: column; text-align: center; }
  .logo { justify-content: center; }
  .header-stats { width: 100%; justify-content: center; }
  .tabs { overflow-x: auto; }
  main { padding: 16px; }
}