:root {
    /* Teal color palette - sea blue-green */
    --teal-50: #f0fdfa;
    --teal-100: #ccfbf1;
    --teal-200: #99f6e4;
    --teal-300: #5eead4;
    --teal-400: #2dd4bf;
    --teal-500: #14b8a6;
    --teal-600: #0d9488;
    --teal-700: #0f766e;
    --teal-800: #115e59;
    --teal-900: #134e4a;
    
    /* Light mode (default) */
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.7);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: rgba(148, 163, 184, 0.2);
    --shadow-color: rgba(0, 0, 0, 0.05);
    --glass-blur: blur(20px);
    --accent: var(--teal-500);
    --accent-light: var(--teal-100);
    --accent-dark: var(--teal-600);
    --status-online: #10b981;
    --status-offline: #ef4444;
    --gradient-start: var(--teal-400);
    --gradient-end: var(--teal-600);
}

/* Dark mode - auto based on system preference */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-card: rgba(30, 41, 59, 0.7);
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-muted: #94a3b8;
        --border-color: rgba(148, 163, 184, 0.15);
        --shadow-color: rgba(0, 0, 0, 0.3);
        --accent-light: var(--teal-900);
        --accent-dark: var(--teal-400);
    }
}

/* Manual dark mode override */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: rgba(148, 163, 184, 0.15);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --accent-light: var(--teal-900);
    --accent-dark: var(--teal-400);
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.7);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: rgba(148, 163, 184, 0.2);
    --shadow-color: rgba(0, 0, 0, 0.05);
    --accent-light: var(--teal-100);
    --accent-dark: var(--teal-600);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Animated gradient background */
.dashboard-container {
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

.dashboard-container::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 80%, var(--teal-200) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--teal-300) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, var(--teal-100) 0%, transparent 40%);
    opacity: 0.3;
    animation: gradientMove 20s ease infinite;
    z-index: -1;
    pointer-events: none;
}

@keyframes gradientMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, 2%) rotate(120deg); }
    66% { transform: translate(-2%, 1%) rotate(240deg); }
}

/* Header */
.dashboard-header {
    padding: 1.5rem 2rem;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-info {
    text-align: center;
    flex: 1;
}

.hostname {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.clock {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
    margin-top: 0.25rem;
}

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--accent-light);
    color: var(--accent);
    transform: translateY(-1px);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.sun-icon {
    display: none;
}

[data-theme="light"] .sun-icon,
@media (prefers-color-scheme: light) {
    .sun-icon { display: block; }
    .moon-icon { display: none; }
}

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }
[data-theme="light"] .sun-icon { display: none; }

/* Main Content */
.dashboard-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, var(--gradient-start), var(--gradient-end));
    border-radius: 2px;
}

/* Stats Section */
.stats-section {
    margin-bottom: 3rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px -1px var(--shadow-color);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px var(--shadow-color);
    border-color: var(--accent);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.uptime-icon {
    background: var(--accent-light);
    color: var(--accent);
}

.load-icon {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.memory-icon {
    background: rgba(139, 92, 246, 0.15);
    color: #8b5cf6;
}

.disk-icon {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.ssl-icon {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.update-icon {
    background: rgba(236, 72, 153, 0.15);
    color: #ec4899;
}

.stat-content {
    flex: 1;
    min-width: 0;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.stat-bar {
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
    margin-top: 0.75rem;
    overflow: hidden;
}

.stat-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* Services Section */
.services-section {
    margin-bottom: 3rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 6px -1px var(--shadow-color);
}

.service-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px var(--shadow-color);
    border-color: var(--accent);
}

.service-card.featured {
    border: 2px solid var(--accent);
    background: linear-gradient(135deg, var(--bg-card), var(--accent-light));
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.service-icon svg {
    width: 28px;
    height: 28px;
}

.service-content {
    flex: 1;
}

.service-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.service-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.service-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    position: relative;
}

.status-indicator::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.status-online {
    background: var(--status-online);
}

.status-online::after {
    background: var(--status-online);
    opacity: 0.5;
}

.status-offline {
    background: var(--status-offline);
}

.status-offline::after {
    background: var(--status-offline);
    opacity: 0.5;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(2); opacity: 0; }
}

.status-text {
    color: var(--text-muted);
}

/* Footer */
.dashboard-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-header {
        padding: 1rem;
    }
    
    .header-content {
        flex-wrap: wrap;
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .header-info {
        order: 3;
        width: 100%;
        text-align: left;
        margin-top: 0.5rem;
    }
    
    .dashboard-main {
        padding: 1rem;
    }
    
    .stats-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card,
    .service-card {
        padding: 1rem;
    }
}

/* Loading animation */
.loading {
    animation: shimmer 2s infinite;
    background: linear-gradient(
        90deg,
        var(--bg-secondary) 25%,
        var(--bg-card) 50%,
        var(--bg-secondary) 75%
    );
    background-size: 200% 100%;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}