.admin-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: hsla(222, 47%, 10%, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: 1px solid var(--border-color);
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.brand {
    font-size: 1.7rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-item a:hover, .nav-item.active a {
    color: var(--text-main);
    background: hsla(217, 32%, 18%, 0.6);
    border: 1px solid var(--border-color);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: 80px;
    background: hsla(222, 47%, 8%, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.4);
    font-family: 'Outfit', sans-serif;
}

.content-body {
    flex: 1;
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 40px;
    overflow-y: auto;
}

.dashboard-header {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.dashboard-header h1 {
    font-size: 2.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 60%, hsl(215, 20%, 75%));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.dashboard-header p {
    color: var(--text-muted);
}

/* Metric Cards Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.metric-card {
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
}

.metric-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
}

.metric-value {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-main);
    font-family: 'Outfit', sans-serif;
}

.metric-footer {
    font-size: 0.8rem;
    color: var(--success);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 24px;
}

.chart-card {
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-height: 320px;
}

.chart-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}