:root {
--bg-dark: #0b132b;
--bg-panel: #1c2541;
--text-main: #ffffff;
--text-muted: #8d99ae;
--accent-blue: #3a506b;
--accent-cyan: #48cae4;
--alert-orange: #f77f00;
--font-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
font-family: var(--font-base);
background-color: var(--bg-dark);
color: var(--text-main);
overflow: hidden;
}

.dashboard-container {
display: grid;
grid-template-columns: 250px 1fr;
height: 100vh;
}


.sidebar {
background-color: var(--bg-panel);
padding: 2rem;
border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.brand h2 {
font-size: 1.8rem;
letter-spacing: 1px;
margin-bottom: 3rem;
}

.brand span {
color: var(--accent-cyan);
}

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

.nav-menu li {
margin-bottom: 1rem;
}

.nav-menu a {
color: var(--text-muted);
text-decoration: none;
font-size: 1.1rem;
display: block;
padding: 0.5rem 1rem;
border-radius: 4px;
transition: all 0.3s ease;
}

.nav-menu li.active a, .nav-menu a:hover {
background-color: var(--accent-blue);
color: var(--text-main);
}

.main-content {
padding: 2rem 3rem;
overflow-y: auto; 
}

.topbar {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 2.5rem;
}

.subtitle {
color: var(--text-muted);
font-size: 0.9rem;
margin-top: 0.2rem;
}

.stats-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
gap: 1.5rem;
margin-bottom: 2.5rem;
}

.stat-card {
background-color: var(--bg-panel);
padding: 1.5rem;
border-radius: 8px;
border-left: 4px solid var(--accent-blue);
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
font-size: 0.9rem;
color: var(--text-muted);
text-transform: uppercase;
margin-bottom: 0.5rem;
}

.stat-card h2 {
font-size: 2rem;
color: var(--accent-cyan);
}

.stat-card.anomaly {
border-left-color: var(--alert-orange);
}

.stat-card.anomaly h2 {
color: var(--alert-orange);
}

.chart-container {
background-color: var(--bg-panel);
padding: 2rem;
border-radius: 8px;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
position: relative; 
height: 380px; 
width: 100%;
}


.chart-header {
margin-bottom: 1.5rem;
}

@media (max-width: 768px) {

.dashboard-container {
grid-template-columns: 1fr;
grid-template-rows: auto 1fr;
}

.sidebar {
padding: 1rem 1.5rem;
border-right: none;
border-bottom: 1px solid rgba(255, 255, 255, 0.05);
display: flex;
flex-direction: column;
gap: 1rem;
}

.brand h2 {
margin-bottom: 0;
font-size: 1.5rem;
}

.nav-menu {
display: flex;
gap: 0.5rem;
overflow-x: auto;
padding-bottom: 0.5rem;
}

.nav-menu li {
margin-bottom: 0;
}

.nav-menu a {
white-space: nowrap;
font-size: 0.9rem;
}

.main-content {
padding: 1.5rem 1rem;
}

.topbar {
flex-direction: column;
align-items: flex-start;
gap: 1rem;
margin-bottom: 1.5rem;
}


.stats-grid {
grid-template-columns: 1fr;
gap: 1rem;
}


.chart-container {
padding: 1rem;
height: 300px;
}
}