/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #1a1a25;
    --bg-tertiary: #2a2a3a;
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border-glass: rgba(255, 255, 255, 0.1);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b8b8cc;
    --text-muted: #8a8aa8;
    
    /* Accent Colors */
    --accent-primary: #00f5ff;
    --accent-secondary: #ff6b6b;
    --accent-success: #4ecdc4;
    --accent-warning: #ffe66d;
    --accent-danger: #ff6b6b;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
    --gradient-warning: linear-gradient(135deg, #ffe66d 0%, #ff6b6b 100%);
    --gradient-danger: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 245, 255, 0.3);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 107, 107, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(0, 245, 255, 0.2) 0%, transparent 50%);
    z-index: -1;
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* Main Container */
#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand i {
    font-size: 2rem;
    color: var(--accent-primary);
    filter: drop-shadow(var(--shadow-glow));
}

.brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.status {
    display: flex;
    gap: 2rem;
    font-size: 0.875rem;
}

.status span {
    padding: 0.5rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

/* Navigation Styles */
.navigation {
    background: var(--bg-secondary);
    padding: 1rem 2rem;
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-glass);
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-btn:hover::before,
.nav-btn.active::before {
    left: 0;
}

.nav-btn:hover,
.nav-btn.active {
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Main Content */
.main {
    flex: 1;
    padding: 2rem;
}

.tab-content {
    display: none;
    animation: fadeInUp 0.5s ease;
}

.tab-content.active {
    display: block;
}

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

/* Metrics Cards */
.metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.metric-card h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

.metric-card p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Charts */
.charts {
    margin-top: 2rem;
}

.chart-container {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 2rem;
    height: 400px;
}

/* Device Cards */
#devicesList {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.device-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.device-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.device-header {
    display: flex;
    justify-content: between;
    align-items: center;
    margin-bottom: 1rem;
}

.device-status {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-active {
    background: rgba(78, 205, 196, 0.2);
    color: var(--accent-success);
    border: 1px solid var(--accent-success);
}

.status-blocked {
    background: rgba(255, 107, 107, 0.2);
    color: var(--accent-danger);
    border: 1px solid var(--accent-danger);
}

/* Security Section */
#securityContent {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.security-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.security-metric {
    display: flex;
    justify-content: between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-glass);
}

.security-metric:last-child {
    border-bottom: none;
}

/* Loading States */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--bg-tertiary);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .navigation {
        flex-wrap: wrap;
        padding: 1rem;
    }
    
    .main {
        padding: 1rem;
    }
    
    .metrics {
        grid-template-columns: 1fr;
    }
    
    #devicesList {
        grid-template-columns: 1fr;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* Custom Animations */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-success { color: var(--accent-success); }
.text-warning { color: var(--accent-warning); }
.text-danger { color: var(--accent-danger); }
.text-muted { color: var(--text-muted); }

.bg-success { background: var(--gradient-success); }
.bg-warning { background: var(--gradient-warning); }
.bg-danger { background: var(--gradient-danger); }

.hidden { display: none; }
.visible { display: block; }