:root {
    --primary-red: #c41e3a;
    --dark-bg: #0d1117;
    --darker-bg: #010409;
    --card-bg: #161b22;
    --border-color: #30363d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent-red: #f85149;
    --success-green: #3fb950;
    --warning-orange: #fb8500;
}

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

html, body {
    width: 100%;
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    color: var(--text-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-red) 0%, #a01729 100%);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 24px rgba(196, 30, 58, 0.25);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header-title h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.header-title .subtitle {
    font-size: 0.95rem;
    opacity: 0.9;
}

.header-stats {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.stat-badge {
    background: rgba(255, 255, 255, 0.15);
    padding: 12px 20px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-badge .label {
    font-size: 0.75rem;
    opacity: 0.8;
    display: block;
}

.stat-badge .value {
    font-size: 1.4rem;
    font-weight: 600;
    display: block;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

@media (min-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .cpu-chart-card {
        grid-column: span 2;
    }
    
    .processes-card {
        grid-column: span 2;
    }
}

@media (min-width: 768px) and (max-width: 1199px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cpu-chart-card {
        grid-column: span 2;
    }
    
    .processes-card {
        grid-column: span 2;
    }
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.card:hover {
    border-color: var(--primary-red);
    box-shadow: 0 8px 24px rgba(196, 30, 58, 0.2);
}

.card-header {
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.1) 0%, rgba(248, 81, 73, 0.05) 100%);
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-content {
    padding: 20px;
}

/* CPU Card */
.cpu-card .card-content {
    display: flex;
    gap: 30px;
    align-items: center;
}

.metric-large {
    flex: 0 0 auto;
}

.gauge-container {
    width: 150px;
    height: 150px;
}

.gauge {
    transform: rotate(-90deg);
}

.gauge-background {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 8;
}

.gauge-progress {
    fill: none;
    stroke: url(#gaugeGradient);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 345.575;
    transition: stroke-dashoffset 0.3s ease;
}

.gauge-text {
    fill: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    text-anchor: middle;
    transform: rotate(90deg);
    transform-origin: 60px 60px;
}

.cores-info {
    flex: 1;
}

.cores-info h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.core-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.core-item .value {
    color: var(--primary-red);
    font-weight: 600;
}

/* Memory Card */
.memory-section {
    margin-bottom: 20px;
}

.memory-section:last-child {
    margin-bottom: 0;
}

.memory-section h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-red) 0%, var(--accent-red) 100%);
    border-radius: 6px;
    transition: width 0.3s ease;
}

.memory-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Disk Card */
.disk-item {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.disk-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.disk-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.disk-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.disk-mount {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.disk-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Network Card */
.network-stats {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.network-stat {
    flex: 1;
    text-align: center;
    padding: 12px;
    background: var(--dark-bg);
    border-radius: 8px;
}

.network-stat .label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.network-stat .value {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-red);
}

/* Chart Cards */
.cpu-chart-card, .network-card {
    position: relative;
}

#cpuChart, #networkChart {
    max-height: 300px;
}

/* Processes Table */
.processes-table {
    overflow-x: auto;
}

.processes-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.processes-table thead {
    background: var(--dark-bg);
}

.processes-table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.processes-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.processes-table tbody tr:hover {
    background: var(--dark-bg);
}

.processes-table tbody tr:last-child td {
    border-bottom: none;
}

.process-name {
    color: var(--text-primary);
    font-weight: 500;
}

.process-cpu {
    color: var(--accent-red);
    font-weight: 600;
}

.process-memory {
    color: var(--success-green);
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }
    
    .header {
        padding: 20px;
    }
    
    .header-title h1 {
        font-size: 1.8rem;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .header-stats {
        width: 100%;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .cpu-chart-card, .processes-card {
        grid-column: span 1;
    }
    
    .cpu-card .card-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .processes-table {
        font-size: 0.8rem;
    }
    
    .processes-table th, .processes-table td {
        padding: 8px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.3s ease-out;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-red);
}