:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-hover: #22263a;
  --border: #2a2e3e;
  --text: #e1e4ea;
  --text-secondary: #8b8fa3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --green: #22c55e;
  --red: #ef4444;
  --orange: #f59e0b;
  --purple: #a855f7;
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Login Screen */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.login-box p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.login-box input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 16px;
  outline: none;
}

.login-box input:focus {
  border-color: var(--accent);
}

.login-box button {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  font-weight: 600;
}

.login-box button:hover {
  background: var(--accent-hover);
}

.login-error {
  color: var(--red);
  font-size: 0.85rem;
  margin-bottom: 12px;
  display: none;
}

/* Dashboard Layout */
.dashboard {
  display: none;
}

.dashboard.active {
  display: block;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

header h1 {
  font-size: 1.2rem;
  font-weight: 600;
}

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

.btn-logout {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
}

.btn-logout:hover {
  border-color: var(--red);
  color: var(--red);
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  gap: 4px;
  padding: 16px 32px 0;
  border-bottom: 1px solid var(--border);
}

.nav-tab {
  padding: 10px 20px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.2s;
}

.nav-tab:hover {
  color: var(--text);
}

.nav-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Main Content */
.content {
  padding: 24px 32px;
  max-width: 1400px;
  margin: 0 auto;
}

.page { display: none; }
.page.active { display: block; }

/* Stat Cards */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat-card .label {
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 2rem;
  font-weight: 700;
}

.stat-card .value.green { color: var(--green); }
.stat-card .value.accent { color: var(--accent); }
.stat-card .value.purple { color: var(--purple); }
.stat-card .value.orange { color: var(--orange); }

/* Chart Cards */
.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}

.chart-card h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.chart-card canvas {
  width: 100% !important;
  max-height: 350px;
}

/* Grid layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .content { padding: 16px; }
  header { padding: 12px 16px; }
  .nav-tabs { padding: 12px 16px 0; overflow-x: auto; }
}

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.data-table tbody tr:hover {
  background: var(--surface-hover);
}

/* Controls */
.controls {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.controls select,
.controls input {
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.85rem;
}

/* Loading */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
}

.spinner {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Country flag emoji spacing */
.country-flag {
  margin-right: 8px;
}

/* Refresh indicator */
.last-updated {
  color: var(--text-secondary);
  font-size: 0.8rem;
}