:root {
--primary: #7c3aed;
--primary-dark: #0077b6;
--black: #121212;
--dark-gray: #1e1e1e;
--medium-gray: #2d2d2d;
--light-gray: #3d3d3d;
--text-light: #f0f0f0;
--text-dark: #333333;
--white: #ffffff;
--success: #2ecc71;
--warning: #f39c12;
--danger: #e74c3c;
--chart-1: #7c3aed;
--chart-2: #2ecc71;
--chart-3: #f1c40f;
--chart-4: #9b59b6;
--chart-5: #e74c3c;
}

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

body {
font-family: 'Montserrat', sans-serif;
background-color: var(--black);
color: var(--text-light);
line-height: 1.6;
transition: all 0.3s ease;
}

.app-container {
display: flex;
min-height: 100vh;
position: relative;
}

.sidebar {
width: 280px;
background-color: var(--dark-gray);
border-right: 1px solid var(--medium-gray);
height: 100vh;
position: fixed;
transition: all 0.3s ease;
transform: translateX(-100%);
z-index: 100;
display: flex;
flex-direction: column;
}

.sidebar.active {
transform: translateX(0);
box-shadow: 5px 0 15px rgba(0,0,0,0.3);
}

.sidebar-header {
padding: 20px;
display: flex;
justify-content: space-between;
align-items: center;
border-bottom: 1px solid var(--medium-gray);
}

.logo img {
max-width: 180px;
height: auto;
}

.no-context-menu {
-webkit-user-select: none;
user-select: none;
-webkit-user-drag: none;
pointer-events: none;
}

.close-menu {
background: none;
border: none;
color: var(--text-light);
font-size: 1.5rem;
cursor: pointer;
transition: all 0.3s ease;
}

.close-menu:hover {
color: var(--primary);
transform: rotate(90deg);
}

.sidebar-content {
padding: 20px;
overflow-y: auto;
flex: 1;
min-height: 0;
}

.menu-section {
margin-bottom: 30px;
}

.menu-title {
font-size: 0.9rem;
text-transform: uppercase;
color: var(--primary);
margin-bottom: 15px;
letter-spacing: 1px;
}

.menu-list {
list-style: none;
}

.menu-list li {
margin-bottom: 5px;
position: relative;
}

.menu-list a {
display: flex;
align-items: center;
padding: 12px 15px;
color: var(--text-light);
text-decoration: none;
border-radius: 6px;
transition: all 0.3s ease;
font-size: 0.95rem;
}

.menu-list a:hover {
background-color: var(--medium-gray);
color: var(--primary);
}

.menu-list a i {
margin-right: 10px;
width: 20px;
text-align: center;
font-size: 1rem;
}

.menu-list .submenu-list {
display: none;
list-style: none;
margin-left: 15px;
margin-top: 5px;
transition: all 0.3s ease;
}

.menu-list .submenu.active .submenu-list {
display: block;
}

.menu-list .submenu-list li {
margin-bottom: 3px;
}

.menu-list .submenu-list a {
padding: 8px 15px;
font-size: 0.85rem;
background-color: rgba(0,0,0,0.2);
}

.menu-list .submenu > a .arrow {
margin-left: auto;
transition: transform 0.3s ease;
}

.menu-list .submenu.active > a .arrow {
transform: rotate(180deg);
}

.main-content {
flex: 1;
margin-left: 0;
padding: 20px;
transition: all 0.3s ease;
}

.main-header {
display: flex;
align-items: center;
padding: 15px 20px;
background-color: var(--dark-gray);
border-radius: 10px;
margin-bottom: 20px;
}

.menu-toggle {
background: none;
border: none;
color: var(--text-light);
font-size: 1.5rem;
margin-right: 20px;
cursor: pointer;
transition: all 0.3s ease;
}

.menu-toggle:hover {
color: var(--primary);
}

.header-title h1 {
font-size: 1.8rem;
margin-bottom: 5px;
background: linear-gradient(90deg, var(--primary), var(--primary-dark));
-webkit-background-clip: text;
background-clip: text;
color: transparent;
}

.header-title p {
font-size: 0.9rem;
color: var(--text-light);
opacity: 0.7;
}

.theme-selector {
display: flex;
margin-left: auto;
gap: 8px;
}

.theme-btn {
width: 36px;
height: 36px;
border-radius: 50%;
border: none;
background-color: var(--medium-gray);
color: var(--text-light);
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
transition: all 0.3s ease;
}

.theme-btn:hover {
transform: scale(1.1);
}

.theme-btn.active {
box-shadow: 0 0 0 2px var(--primary);
}

.metrics-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 20px;
margin-bottom: 30px;
}

.metric-card {
background-color: var(--dark-gray);
border-radius: 10px;
padding: 20px;
transition: all 0.3s ease;
border-left: 4px solid var(--primary);
}

.metric-card:hover {
transform: translateY(-5px);
box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.metric-header {
display: flex;
align-items: center;
margin-bottom: 15px;
}

.metric-header i {
width: 40px;
height: 40px;
background-color: rgba(0,168,255,0.1);
border-radius: 8px;
display: flex;
align-items: center;
justify-content: center;
color: var(--primary);
margin-right: 15px;
font-size: 1.2rem;
}

.metric-header h3 {
font-size: 1rem;
font-weight: 500;
}

.metric-value {
font-size: 1.8rem;
font-weight: 700;
margin-bottom: 5px;
}

.metric-value.status-up {
color: var(--success);
}

.metric-value.status-warning {
color: var(--warning);
}

.metric-value.status-down {
color: var(--danger);
}

.metric-description {
font-size: 0.9rem;
color: var(--text-light);
opacity: 0.7;
}

.charts-section {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
gap: 20px;
margin-bottom: 30px;
}

.chart-container {
background-color: var(--dark-gray);
border-radius: 10px;
padding: 20px;
transition: all 0.3s ease;
}

.chart-container:hover {
transform: translateY(-3px);
box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.chart-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 15px;
}

.chart-header h3 {
display: flex;
align-items: center;
font-size: 1.1rem;
}

.chart-header h3 i {
margin-right: 10px;
color: var(--primary);
}

.chart-legend {
font-size: 0.8rem;
color: var(--text-light);
opacity: 0.7;
}

.legend-cpu, .legend-memory, .legend-network, .legend-load, .legend-speed {
display: inline-block;
width: 12px;
height: 12px;
border-radius: 2px;
margin-right: 5px;
}

.legend-cpu {
background-color: var(--chart-1);
}

.legend-memory {
background-color: var(--chart-2);
}

.legend-network {
background-color: var(--chart-3);
}

.legend-load {
background-color: var(--chart-4);
}

.legend-speed {
background-color: var(--chart-5);
}

.chart-wrapper {
height: 250px;
position: relative;
}

.system-info {
background-color: var(--dark-gray);
border-radius: 10px;
padding: 25px;
margin-bottom: 30px;
}

.system-info h2 {
display: flex;
align-items: center;
font-size: 1.3rem;
margin-bottom: 20px;
}

.system-info h2 i {
margin-right: 10px;
color: var(--primary);
}

.info-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 20px;
}

.info-item {
margin-bottom: 15px;
}

.info-item label {
display: block;
font-size: 0.9rem;
color: var(--text-light);
opacity: 0.7;
margin-bottom: 5px;
}

.info-item span {
font-size: 1.1rem;
font-weight: 600;
word-break: break-all;
}

.main-footer {
text-align: center;
padding: 20px;
color: var(--text-light);
opacity: 0.7;
font-size: 0.9rem;
border-top: 1px solid var(--medium-gray);
}

.loading-spinner {
display: inline-block;
width: 20px;
height: 20px;
border: 3px solid var(--medium-gray);
border-radius: 50%;
border-top-color: var(--primary);
animation: spin 1s linear infinite;
}

@keyframes spin {
to { transform: rotate(360deg); }
}

body.light-mode {
--black: #f8f9fa;
--dark-gray: #ffffff;
--medium-gray: #e0e0e0;
--light-gray: #d0d0d0;
--text-light: #333333;
--text-dark: #121212;
background-color: var(--black);
color: var(--text-light);
}

body.light-mode .sidebar,
body.light-mode .main-header,
body.light-mode .music-card,
body.light-mode .metric-card,
body.light-mode .chart-container,
body.light-mode .system-info {
background-color: var(--dark-gray);
border-color: var(--medium-gray);
box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

body.light-mode .menu-list a,
body.light-mode .metric-description,
body.light-mode .chart-legend,
body.light-mode .info-item label,
body.light-mode .main-footer {
color: var(--text-light);
opacity: 0.8;
}

body.light-mode .menu-list a:hover,
body.light-mode .metric-card:hover,
body.light-mode .chart-container:hover {
background-color: var(--light-gray);
}

body.light-mode .header-title p,
body.light-mode .music-time,
body.light-mode .music-artist {
color: var(--text-light);
opacity: 0.7;
}

body.light-mode .theme-btn {
background-color: var(--light-gray);
}

body.blue-mode {
--black: #0a192f;
--dark-gray: #172a45;
--medium-gray: #303f60;
--light-gray: #475f8c;
--text-light: #e6f1ff;
--text-dark: #a8b2d1;
--primary: #64ffda;
--primary-dark: #52d1b2;
background-color: var(--black);
color: var(--text-light);
}

body.blue-mode .sidebar,
body.blue-mode .main-header,
body.blue-mode .music-card,
body.blue-mode .metric-card,
body.blue-mode .chart-container,
body.blue-mode .system-info {
background-color: var(--dark-gray);
border-color: var(--medium-gray);
}

body.blue-mode .menu-list a,
body.blue-mode .metric-description,
body.blue-mode .chart-legend,
body.blue-mode .info-item label,
body.blue-mode .main-footer {
color: var(--text-dark);
}

body.blue-mode .menu-list a:hover,
body.blue-mode .metric-card:hover,
body.blue-mode .chart-container:hover {
background-color: var(--medium-gray);
}

body.blue-mode .header-title p,
body.blue-mode .music-time,
body.blue-mode .music-artist {
color: var(--text-dark);
}

body.blue-mode .theme-btn {
background-color: var(--medium-gray);
}

body.neutral-mode {
--black: #f5f5f5;
--dark-gray: #e0e0e0;
--medium-gray: #bdbdbd;
--light-gray: #9e9e9e;
--text-light: #212121;
--text-dark: #424242;
--primary: #616161;
--primary-dark: #424242;
background-color: var(--black);
color: var(--text-light);
}

body.neutral-mode .sidebar,
body.neutral-mode .main-header,
body.neutral-mode .music-card,
body.neutral-mode .metric-card,
body.neutral-mode .chart-container,
body.neutral-mode .system-info {
background-color: var(--dark-gray);
border-color: var(--medium-gray);
}

body.neutral-mode .menu-list a,
body.neutral-mode .metric-description,
body.neutral-mode .chart-legend,
body.neutral-mode .info-item label,
body.neutral-mode .main-footer {
color: var(--text-light);
}

body.neutral-mode .menu-list a:hover,
body.neutral-mode .metric-card:hover,
body.neutral-mode .chart-container:hover {
background-color: var(--medium-gray);
}

body.neutral-mode .header-title p,
body.neutral-mode .music-time,
body.neutral-mode .music-artist {
color: var(--text-dark);
}

body.neutral-mode .theme-btn {
background-color: var(--medium-gray);
}

body.pink-mode {
--black: #1a1a2e;
--dark-gray: #16213e;
--medium-gray: #0f3460;
--light-gray: #533483;
--text-light: #e94560;
--text-dark: #f8a1d1;
--primary: #e94560;
--primary-dark: #d13354;
background-color: var(--black);
color: var(--text-dark);
}

body.pink-mode .sidebar,
body.pink-mode .main-header,
body.pink-mode .music-card,
body.pink-mode .metric-card,
body.pink-mode .chart-container,
body.pink-mode .system-info {
background-color: var(--dark-gray);
border-color: var(--medium-gray);
}

body.pink-mode .menu-list a,
body.pink-mode .metric-description,
body.pink-mode .chart-legend,
body.pink-mode .info-item label,
body.pink-mode .main-footer {
color: var(--text-dark);
}

body.pink-mode .menu-list a:hover,
body.pink-mode .metric-card:hover,
body.pink-mode .chart-container:hover {
background-color: var(--medium-gray);
}

body.pink-mode .header-title p,
body.pink-mode .music-time,
body.pink-mode .music-artist {
color: var(--text-dark);
}

body.pink-mode .theme-btn {
background-color: var(--medium-gray);
}

@media (max-width: 992px) {
.sidebar {
width: 250px;
}
}

@media (max-width: 768px) {
.metrics-grid,
.charts-section,
.info-grid {
grid-template-columns: 1fr;
}

.music-card {
flex-direction: column;
}

.music-cover {
width: 100%;
height: 200px;
}

.main-header {
flex-direction: column;
align-items: flex-start;
}

.header-title {
margin-bottom: 15px;
}

.theme-selector {
margin-left: 0;
width: 100%;
justify-content: space-between;
}
}