:root {
  --primary: #00ff88;
  --secondary: #ff0080;
  --accent: #0088ff;
  --dark: #0a0a0a;
  --darker: #050505;
  --light: #ffffff;
  --gray: #888888;
  --gray-light: #cccccc;
  --gray-dark: #333333;
  
  --font-primary: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  
  --radius: 1rem;
  --radius-sm: 0.5rem;
  --radius-lg: 2rem;
  
  --shadow: 0 10px 50px rgba(0, 255, 136, 0.1);
  --shadow-lg: 0 20px 80px rgba(0, 255, 136, 0.2);
  
  --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
}

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

body {
  font-family: var(--font-primary);
  background: var(--darker);
  color: var(--light);
  overflow-x: hidden;
  min-height: 100vh;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 0, 128, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(0, 136, 255, 0.1) 0%, transparent 50%);
}

.dashboard-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Header */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logo-icon {
  font-size: 1.5rem;
  animation: pulse 2s infinite;
}

.logo-text {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.2rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-tabs {
  display: flex;
  gap: var(--spacing-xs);
}

.nav-tab {
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--gray-light);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-tab.active,
.nav-tab:hover {
  background: var(--gradient-primary);
  color: var(--dark);
  border-color: transparent;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box input {
  padding: 0.5rem 2.5rem 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--light);
  width: 200px;
  transition: all 0.3s ease;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.search-icon {
  position: absolute;
  right: 0.75rem;
  opacity: 0.6;
}

.user-profile {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.notification-dot {
  width: 8px;
  height: 8px;
  background: var(--secondary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.avatar {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.avatar:hover {
  transform: scale(1.1);
}

/* Main Content */
.dashboard-main {
  flex: 1;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-sm);
}

.stat-card {
  background: var(--gradient-card);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: rgba(0, 255, 136, 0.3);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.stat-card:hover::before {
  transform: scaleX(1);
}

.stat-icon {
  font-size: 2rem;
  opacity: 0.8;
}

.stat-content {
  flex: 1;
}

.stat-title {
  font-size: 0.9rem;
  color: var(--gray-light);
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--light);
  font-family: var(--font-mono);
}

.stat-change {
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 0.25rem;
}

.stat-change.positive {
  color: var(--primary);
}

.stat-change.negative {
  color: var(--secondary);
}

.stat-chart {
  width: 60px;
  height: 40px;
}

.mini-chart {
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  opacity: 0.3;
  position: relative;
  overflow: hidden;
}

/* Charts Section */
.charts-section {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-sm);
}

.chart-container {
  background: var(--gradient-card);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: var(--spacing-sm);
  transition: all 0.3s ease;
}

.chart-container:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.chart-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
}

.chart-controls {
  display: flex;
  gap: 0.25rem;
}

.chart-btn {
  padding: 0.25rem 0.75rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--gray-light);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.chart-btn.active,
.chart-btn:hover {
  background: var(--primary);
  color: var(--dark);
  border-color: var(--primary);
}

.main-chart {
  height: 200px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.main-chart::before {
  content: 'Interaktywny wykres ruchu';
  color: var(--gray);
  font-size: 0.9rem;
}

/* Device Stats */
.device-stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.device-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.device-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.device-name {
  font-weight: 500;
}

.device-percentage {
  font-family: var(--font-mono);
  color: var(--primary);
  font-weight: 600;
}

.device-bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.device-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 4px;
  transition: width 1s ease;
  position: relative;
}

.device-progress::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 20px;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
  animation: shine 2s infinite;
}

/* Activity Section */
.activity-section {
  background: var(--gradient-card);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: var(--spacing-sm);
}

.activity-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.activity-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
}

.refresh-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  color: var(--gray-light);
  cursor: pointer;
  transition: all 0.3s ease;
}

.refresh-btn:hover {
  background: var(--primary);
  color: var(--dark);
  border-color: var(--primary);
  transform: rotate(180deg);
}

.activity-feed {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.activity-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
}

.activity-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.activity-icon {
  font-size: 1.2rem;
  opacity: 0.8;
}

.activity-content {
  flex: 1;
}

.activity-content p {
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.activity-time {
  font-size: 0.8rem;
  color: var(--gray);
}

/* Back Button */
.back-button {
  position: fixed;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--gradient-primary);
  color: var(--dark);
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
  transition: all 0.3s ease;
  z-index: 1000;
}

.back-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* Animations */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 1024px) {
  .charts-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .dashboard-header {
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
  }
  
  .header-left {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .search-box input {
    width: 150px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .dashboard-main {
    padding: var(--spacing-sm);
  }
  
  .back-button {
    bottom: var(--spacing-sm);
    left: var(--spacing-sm);
  }
}