:root {
    --bg-dark: #0a0a0c;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --accent-blue: #00a3ff;
    --accent-purple: #8a2be2;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --sidebar-width: 260px;
    --border-color: rgba(255, 255, 255, 0.1);
    --success: #00ff88;
    --danger: #ff4d4d;
    --warning: #ffaa00;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: rgba(15, 15, 18, 0.95);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--accent-blue);
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1rem;
    border-radius: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.nav-item:hover, .nav-item.active {
    background: var(--bg-card);
    color: var(--text-primary);
}

.nav-item i {
    font-size: 1.25rem;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 2rem;
    max-width: calc(100vw - var(--sidebar-width));
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.header-title h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.header-title p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 10px var(--success);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    padding: 1.5rem;
    transition: transform 0.2s ease, background 0.2s ease;
}

.card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.card-icon {
    width: 40px;
    height: 40px;
    background: rgba(0, 163, 255, 0.1);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
}

.card-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

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

/* Charts */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.chart-card {
    height: 350px;
}

.chart-wrapper {
    height: 250px;
    width: 100%;
}

/* Table */
.data-table-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    overflow: hidden;
}

.table-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 1rem 1.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

tr:last-child td {
    border-bottom: none;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-up { background: rgba(0, 255, 136, 0.1); color: var(--success); }
.status-down { background: rgba(255, 77, 77, 0.1); color: var(--danger); }

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

.animate-fade-in {
    animation: fadeIn 0.4s ease forwards;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar { width: 80px; padding: 2rem 0.5rem; }
    .logo span, .nav-item span { display: none; }
    .nav-item { justify-content: center; }
    .main-content { margin-left: 80px; max-width: calc(100vw - 80px); }
}

@media (max-width: 768px) {
    .charts-container { grid-template-columns: 1fr; }
    .main-content { padding: 1rem; }
}