/* ===== DASHBOARD LAYOUT ===== */

/* --- App Layout --- */
#app {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    transition: transform var(--transition-base);
}
.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}
.logo-icon {
    display: flex;
    align-items: center;
}
.logo-text {
    font-size: var(--font-lg);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.sidebar-nav {
    flex: 1;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    overflow-y: auto;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 10px var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}
.nav-item:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}
.nav-item.active {
    background: rgba(0, 212, 255, 0.08);
    color: var(--accent-blue);
}
.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--gradient-primary);
    border-radius: 0 3px 3px 0;
}
.nav-item svg {
    flex-shrink: 0;
}
.badge {
    margin-left: auto;
    background: var(--accent-red);
    color: white;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    line-height: 1.3;
}

.sidebar-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
}
.network-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-sm);
    color: var(--text-secondary);
}
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
}
.status-dot.online {
    background: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
    animation: pulse 2s infinite;
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- Header --- */
.header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
}
.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}
.menu-toggle {
    display: none;
    color: var(--text-secondary);
}
.page-title {
    font-size: var(--font-lg);
    font-weight: 700;
}
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}
.search-box {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 6px 14px;
    min-width: 220px;
    transition: border-color var(--transition-fast);
}
.search-box:focus-within {
    border-color: var(--accent-blue);
}
.search-box svg {
    color: var(--text-muted);
    flex-shrink: 0;
}
.search-box input {
    width: 100%;
    font-size: var(--font-sm);
}
.search-box input::placeholder {
    color: var(--text-muted);
}
.header-time {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

/* --- Page Container --- */
.page-container {
    flex: 1;
    padding: var(--space-xl);
    overflow-y: auto;
}

/* --- Dashboard Grid Layouts --- */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}
.grid-2-1 {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}
.section-title {
    font-size: var(--font-md);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* --- Page Animations --- */
.page-section {
    animation: fadeIn 0.4s ease forwards;
}
.page-section:nth-child(2) { animation-delay: 0.1s; }
.page-section:nth-child(3) { animation-delay: 0.15s; }
.page-section:nth-child(4) { animation-delay: 0.2s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .grid-2, .grid-3, .grid-2-1 {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .menu-toggle {
        display: flex;
    }
    .search-box {
        display: none;
    }
    .page-container {
        padding: var(--space-md);
    }
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
}