/* =====================================================
   CRM PRO - LAYOUT STYLES
   Sidebar, Header, Page Layout
   ===================================================== */

/* === APP CONTAINER === */
#app {
    display: flex;
    min-height: 100vh;
}

/* === SIDEBAR === */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color-light);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-normal);
    z-index: var(--z-sticky);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .badge {
    display: none;
}

.sidebar.collapsed .sidebar-header {
    justify-content: center;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: var(--spacing-3);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-color-light);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, var(--primary-500), var(--purple-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-4);
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-1);
    position: relative;
}

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

.nav-item.active {
    background: linear-gradient(135deg, var(--primary-50), rgba(139, 92, 246, 0.1));
    color: var(--primary-600);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: linear-gradient(180deg, var(--primary-500), var(--purple-500));
    border-radius: 0 3px 3px 0;
}

.nav-item i {
    font-size: 1.125rem;
}

.nav-item .badge {
    margin-left: auto;
    background: var(--danger-500);
    color: white;
    padding: 2px 6px;
    font-size: 10px;
    border-radius: var(--radius-full);
}

.sidebar-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
    border-top: 1px solid var(--border-color-light);
}

/* === MAIN CONTENT === */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-normal);
}

.sidebar.collapsed~.main-content {
    margin-left: var(--sidebar-collapsed-width);
}

/* === HEADER === */
.main-header {
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-6);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.mobile-menu {
    display: none;
}

.page-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

/* Hide mobile settings on desktop */
.mobile-settings-btn {
    display: none;
}

/* === PAGE CONTAINER === */
.page-container {
    flex: 1;
    padding: var(--page-padding);
    overflow-y: auto;
}

.page {
    animation: fadeIn var(--transition-normal);
}

/* === PAGE HEADER === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-6);
}

.page-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.page-header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

/* === GRID LAYOUTS === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-5);
    margin-bottom: var(--spacing-6);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-5);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-5);
}

/* === RESPONSIVE === */
@media (max-width: 1280px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
        visibility: hidden;
    }

    .sidebar.mobile-open {
        transform: translateX(0);
        visibility: visible;
    }

    /* Ẩn sidebar-footer khi sidebar không mở */
    .sidebar:not(.mobile-open) .sidebar-footer {
        display: none;
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu {
        display: flex;
    }

    .main-header {
        padding: 0 var(--spacing-4);
    }

    .page-container {
        padding: var(--spacing-4);
    }

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

    .search-box {
        display: none;
    }

    .page-header {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-4);
    }

    .page-header-right {
        justify-content: flex-end;
    }

    .header-right .btn span {
        display: none;
    }

    /* Mobile settings button */
    .mobile-settings-btn {
        display: flex !important;
    }
}

/* === Mobile overlay === */
.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-sticky) - 1);
    display: none;
}

.mobile-overlay.active {
    display: block;
}