/* ============================================
   Sidebar Styles
   ============================================ */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--gradient-sidebar);
    color: white;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: all var(--transition-normal);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-lg) 0;
}

.sidebar-section {
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.sidebar-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.5);
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu-item {
    margin-bottom: var(--spacing-xs);
}

.sidebar-menu-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 0.75rem var(--spacing-md);
    color: rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.sidebar-menu-link:hover,
.sidebar-menu-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.sidebar-menu-link.active {
    background: var(--gradient-primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.sidebar-menu-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
}

.sidebar-menu-text {
    font-size: 0.875rem;
    font-weight: 500;
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
}

.sidebar-user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
}

.sidebar-logout-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-logout-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-danger);
}

/* Mobile Toggle Button */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    z-index: 1001;
    width: 44px;
    height: 44px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
}

/* Mobile Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .sidebar-toggle {
        display: flex;
    }
    
    .main-content {
        margin-left: 0;
        padding-top: 80px;
    }
}

/* ============================================
   Header Styles
   ============================================ */

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

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

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 0.25rem;
}

.lang-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover,
.lang-btn.active {
    background: var(--color-primary);
    color: white;
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Notifications Bell */
.notifications-btn {
    position: relative;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.notifications-btn:hover {
    border-color: var(--color-primary);
}

.notifications-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--color-danger);
    color: white;
    font-size: 0.625rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-menu-trigger:hover {
    border-color: var(--color-primary);
}

.user-menu-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.75rem;
    color: white;
}

.user-menu-info {
    text-align: left;
}

.user-menu-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

.user-menu-role {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    min-width: 200px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 100;
}

.user-menu-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}

.user-menu-item:hover {
    background-color: var(--color-bg-hover);
}

.user-menu-item.danger {
    color: var(--color-danger);
}

.user-menu-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-sm) 0;
}