/* 
 * layout.css - Modern layout components 
 * Header, navigation, sidebar, and page structure
 */

/* Main Page Structure */
.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

.app-content {
    flex: 1;
    display: flex;
    padding: var(--spacing-md) 0;
    overflow-x: hidden;
}

/* Header */
.app-header {
    background-color: var(--color-cardBg);
    box-shadow: var(--shadow-small);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition-medium);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

.menu-btn {
    background: none;
    border: none;
    color: var(--color-textPrimary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-sm);
}

@media (min-width: 992px) {
    .menu-btn {
        display: none;
    }
}

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

.app-logo h1 {
    font-size: var(--font-size-large);
    margin: 0;
    white-space: nowrap;
}

.theme-toggle {
    background-color: transparent;
    border: none;
    color: var(--color-textPrimary);
    cursor: pointer;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

body.dark-mode .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* User Dropdown */
.user-dropdown {
    position: relative;
    cursor: pointer;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-medium);
    transition: var(--transition-fast);
}

.user-info:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

body.dark-mode .user-info:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.user-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.user-name {
    font-weight: 500;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 1000;
    width: 200px;
    background-color: var(--color-cardBg);
    box-shadow: var(--shadow-medium);
    border-radius: var(--radius-medium);
    padding: var(--spacing-xs) 0;
    margin-top: var(--spacing-sm);
    display: none;
    animation: dropdownFadeIn 0.2s ease;
}

@keyframes dropdownFadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.user-dropdown.open .dropdown-menu {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-textPrimary);
    transition: var(--transition-fast);
}

.dropdown-item:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

body.dark-mode .dropdown-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.dropdown-item i {
    font-size: 1.2rem;
    width: 1.5rem;
    text-align: center;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--color-border);
    margin: var(--spacing-xs) 0;
}

/* Sidebar Navigation */
.app-sidebar {
    width: 250px;
    background-color: var(--color-cardBg);
    box-shadow: var(--shadow-small);
    transition: var(--transition-medium);
    overflow-y: auto;
    z-index: 200;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
}

body.sidebar-open .sidebar-backdrop {
    display: block;
}

@media (max-width: 991px) {
    .app-sidebar {
        transform: translateX(-100%);
    }
    
    .app-sidebar.open {
        transform: translateX(0);
    }
    
    .app-main {
        margin-left: 0 !important;
    }
}

@media (min-width: 992px) {
    .app-main {
        margin-left: 250px;
    }
    
    .app-sidebar.collapsed + .app-main {
        margin-left: 60px;
    }
}

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

.app-title {
    font-size: var(--font-size-heading);
    margin: 0;
    font-weight: 700;
    color: var(--color-primary);
}

.sidebar-close {
    background: none;
    border: none;
    color: var(--color-textSecondary);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 992px) {
    .sidebar-close {
        display: none;
    }
}

.app-sidebar.collapsed {
    width: 60px;
}

.app-nav {
    padding: var(--spacing-md) 0;
}

.nav-section {
    margin-bottom: var(--spacing-md);
}

.nav-section-title {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-small);
    text-transform: uppercase;
    color: var(--color-textSecondary);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.app-sidebar.collapsed .nav-section-title {
    display: none;
}

.nav-list {
    list-style: none;
}

.nav-item {
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-textPrimary);
    transition: var(--transition-fast);
    border-left: 3px solid transparent;
    text-decoration: none;
}

.nav-link:hover {
    background-color: var(--color-light);
    color: var(--color-primary);
}

.nav-link.active {
    background-color: var(--color-light);
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    font-weight: 500;
}

.nav-icon {
    margin-right: var(--spacing-sm);
    font-size: 1.2rem;
    width: 1.5rem;
    text-align: center;
}

.app-sidebar.collapsed .nav-text {
    display: none;
}

.app-sidebar.collapsed .nav-link {
    justify-content: center;
    padding: var(--spacing-sm);
}

.app-sidebar.collapsed .nav-icon {
    margin-right: 0;
    font-size: 1.5rem;
}

/* Sidebar Context Information */
.sidebar-context {
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 0 var(--spacing-sm);
    background-color: var(--color-light);
    border-radius: var(--radius-medium);
}

.context-item {
    margin-bottom: var(--spacing-xs);
    display: flex;
    flex-direction: column;
}

.context-label {
    font-size: var(--font-size-small);
    color: var(--color-textSecondary);
}

.context-value {
    font-weight: 500;
}

.context-change {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-small);
    text-decoration: underline;
    display: inline-block;
}

.app-sidebar.collapsed .sidebar-context {
    display: none;
}

/* Sidebar Backdrop (Mobile) */
.sidebar-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 150;
}

@media (max-width: 991px) {
    .app-sidebar.open ~ .sidebar-backdrop {
        display: block;
    }
}

/* Context Switcher in Main Content */
.context-switcher {
    background-color: var(--color-light);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-medium);
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
}

.context-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.context-label {
    font-weight: 500;
    color: var(--color-textSecondary);
    font-size: var(--font-size-small);
}

.context-value {
    font-weight: 600;
}

.context-separator {
    color: var(--color-textSecondary);
    margin: 0 var(--spacing-xs);
}

.context-change {
    margin-left: auto;
    color: var(--color-primary);
    cursor: pointer;
    font-size: var(--font-size-small);
}

/* Content Wrapper */
.content-wrapper {
    padding: var(--spacing-md) 0;
}

/* Page Headers */
.page-header {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.page-title {
    margin-bottom: 0;
    font-size: var(--font-size-heading);
}

.page-subtitle {
    color: var(--color-textSecondary);
    margin-top: calc(var(--spacing-xs) * -1);
    margin-bottom: var(--spacing-sm);
}

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

/* Footer */
.app-footer {
    background-color: var(--color-cardBg);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-info {
    font-size: var(--font-size-small);
    color: var(--color-textSecondary);
}

.footer-nav {
    display: flex;
    gap: var(--spacing-md);
}

.footer-link {
    color: var(--color-textSecondary);
    font-size: var(--font-size-small);
}

/* Responsive fixes */
@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .page-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .context-switcher {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .context-change {
        margin-left: 0;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* Dark Mode Adjustments */
body.dark-mode .app-sidebar,
body.dark-mode .app-header,
body.dark-mode .app-footer {
    background-color: var(--color-dark);
    border-color: var(--color-border);
}

body.dark-mode .sidebar-context,
body.dark-mode .context-switcher,
body.dark-mode .nav-link:hover,
body.dark-mode .nav-link.active {
    background-color: rgba(255, 255, 255, 0.05);
}