/* App Layout */
.app-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-normal);
    z-index: 100;
}
.sidebar.collapsed { width: 72px; }

.sidebar-header {
    padding: var(--space-md);
    height: 72px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}
.logo-text {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
}
.sidebar.collapsed .logo-text { display: none; }

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}
.sidebar-nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}
.sidebar-nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.sidebar-nav-item.active {
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
}
.nav-icon {
    font-size: 1.2rem;
    min-width: 24px;
    text-align: center;
    margin-right: var(--space-md);
}
.sidebar.collapsed .nav-icon { margin-right: 0; }
.nav-label {
    white-space: nowrap;
    overflow: hidden;
}
.sidebar.collapsed .nav-label { display: none; }

.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--border-color);
}

/* Main Content */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Topbar */
.topbar {
    height: 72px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
    position: sticky;
    top: 0;
    z-index: 90;
}
.topbar-left { display: flex; align-items: center; gap: var(--space-md); }
.topbar-right { display: flex; align-items: center; gap: var(--space-md); }

.sidebar-toggle {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
}

.search-box {
    position: relative;
    width: 300px;
}
.search-box input {
    width: 100%;
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    border-radius: var(--radius-xl);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}
.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.notification-bell {
    position: relative;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-secondary);
}
.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--danger);
    color: white;
    font-size: 0.6rem;
    padding: 2px 5px;
    border-radius: 10px;
    font-weight: bold;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}
.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

/* Page Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-xl);
}
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

/* Grids */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}
.kpi-card {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}
.kpi-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}
.kpi-value {
    font-size: 2rem;
    font-weight: 700;
}
.kpi-trend {
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    gap: 4px;
}

.section-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

@media (max-width: 1024px) {
    .sidebar { width: 72px; }
    .logo-text, .nav-label { display: none; }
    .nav-icon { margin-right: 0; }
}