:root {
    --primary-color: #38bdf8;
    --primary_hover: #0ea5e9;
    --secondary-color: #0c4a6e;
    --accent-color: #48d1cc;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;

    --background-color: #1a202c;
    --card-background: #2d3748;
    --text-color: #e2e8f0;
    --text-muted: #a0aec0;
    --border-color: rgba(255, 255, 255, 0.1);
    --highlight-color: rgba(56, 189, 248, 0.2);
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    --hover-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);

    --border-radius-sm: 8px;
    --border-radius: 12px;

    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --hover-transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);

    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.stats-container {
    background: var(--card-background);
    border-radius: 12px;
    padding: 30px;
    width: 100%;
    max-width: 900px;
    border: 1px solid var(--border-color);
}

h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.75rem;
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--background-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.stat-card.highlight { 
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--background-color), var(--highlight-color));
}

.stat-title {
    font-size: .9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
}

.stat-subvalue {
    font-size: .85rem;
    color: var(--text-muted);
}

/* Memory Usage - Memanjang ke kanan */
.memory-section {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 16px;
    margin-bottom: 16px;
}

.memory-info {
    background: var(--background-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.memory-stats {
    background: var(--background-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.memory-title {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.memory-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
}

.memory-total {
    font-size: .85rem;
    color: var(--text-muted);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 3px;
}

/* System Information */
.system-section {
    background: var(--background-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.system-section h3 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.info-item:last-child {
    border-bottom: none;
}

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

.info-value {
    color: var(--text-color);
    font-weight: 500;
}

/* Performance Metrics */
.performance-section {
    background: var(--background-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.performance-section h3 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.performance-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 12px;
}

.performance-item {
    text-align: center;
    padding: 12px;
    background: var(--card-background);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.performance-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.performance-label {
    font-size: .8rem;
    color: var(--text-muted);
}

.start-time {
    text-align: center;
    color: var(--text-muted);
    font-size: .9rem;
    padding: 12px;
    background: var(--card-background);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.last-update {
    text-align: center;
    color: var(--text-muted);
    font-size: .8rem;
    margin-top: 20px;
}

.box-footer {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: .8rem;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .memory-section {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .performance-grid {
        grid-template-columns: 1fr;
    }
    
    body {
        padding: 10px;
    }
    
    .stats-container {
        padding: 20px;
    }
}