/**
 * NEXUS BACKOFFICE - MAIN CSS
 * Styles globaux et layout principal
 * Dépend de: design-system.css
 */

/* ========================================
   LAYOUT PRINCIPAL
   ======================================== */

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-wrapper {
    display: flex;
    flex: 1;
    padding-top: var(--header-height);
}

.main-content {
    flex: 1;
    padding: var(--space-lg);
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-normal);
    min-height: calc(100vh - var(--header-height));
    position: relative; /* Permet aux enfants d'utiliser z-index */
    z-index: var(--z-base); /* Au-dessus du body mais sous header */
}

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

/* ========================================
   HEADER / NAVBAR
   ======================================== */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--bg-primary);
    border-bottom: 2px solid var(--border-primary);
    box-shadow: var(--shadow-md);
    z-index: var(--z-fixed);
    display: flex;
    align-items: center;
    padding: 0 var(--space-lg);
    gap: var(--space-lg);
}

.header-brand {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: color var(--transition-fast);
}

.header-brand:hover {
    color: var(--accent-primary);
}

.header-brand i {
    color: var(--accent-primary);
    font-size: var(--font-size-2xl);
}

.header-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.header-toggle:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-primary);
}

/* Global Search Bar (Gmail-inspired) */
.global-search-container {
    flex: 1;
    max-width: 600px;
    position: relative;
}

.global-search-bar {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 0 12px;
    height: 40px;
    transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.global-search-bar:focus-within {
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
}

.global-search-bar i.bi-search {
    color: var(--text-muted);
    font-size: 18px;
    margin-right: 8px;
}

.global-search-input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    font-size: 14px;
    color: var(--text-primary);
    font-family: var(--font-family);
}

.global-search-input::placeholder {
    color: var(--text-muted);
}

.global-search-clear {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.global-search-clear:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Global Search Results Dropdown */
.global-search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: var(--z-dropdown);
}

.global-search-results:empty {
    display: none;
}

.result-group {
    border-bottom: 1px solid var(--border-primary);
}

.result-group:last-child {
    border-bottom: none;
}

.result-group-header {
    padding: 10px 15px;
    background: var(--bg-secondary);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-item {
    display: block;
    padding: 12px 15px;
    text-decoration: none;
    color: inherit;
    border-bottom: 1px solid var(--border-light);
    transition: background var(--transition-fast);
}

.result-item:last-child {
    border-bottom: none;
}

.result-item:hover {
    background: var(--bg-secondary);
}

.result-title {
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.result-excerpt {
    font-size: 13px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.result-metadata {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

mark {
    background: #fff3cd;
    padding: 2px 4px;
    border-radius: 3px;
    font-weight: 500;
}

.no-results {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
}

.search-loading {
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
}

.header-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.theme-toggle {
    background: none;
    border: 2px solid var(--border-primary);
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--text-inverse);
    transform: scale(1.05);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-primary);
    background-color: var(--bg-secondary);
    transition: all var(--transition-fast);
}

.user-info:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--text-inverse);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-base);
}

.user-name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

/* ========================================
   SIDEBAR
   ======================================== */

.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background-color: var(--bg-secondary);
    border-right: 2px solid var(--border-primary);
    overflow-y: auto;
    overflow-x: hidden;
    transition: width var(--transition-normal);
    z-index: var(--z-sticky);
}

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

.sidebar-menu {
    list-style: none;
    padding: var(--space-md) 0;
}

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

.menu-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    position: relative;
}

.menu-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
}

.menu-link.active {
    background-color: var(--bg-tertiary);
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
    font-weight: var(--font-weight-semibold);
}

.menu-icon {
    font-size: var(--font-size-lg);
    min-width: 24px;
    text-align: center;
}

.menu-text {
    flex: 1;
    white-space: nowrap;
    opacity: 1;
    transition: opacity var(--transition-fast);
}

.sidebar.collapsed .menu-text {
    opacity: 0;
    width: 0;
}

.menu-badge {
    background-color: var(--error);
    color: var(--text-inverse);
    font-size: var(--font-size-xs);
    padding: 2px 6px;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-bold);
}

/* Submenu */
.submenu {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.menu-item.open > .submenu {
    max-height: 1000px;
}

/* ✅ Support submenu-item avec sous-menu (niveau 2) */
.submenu-item.has-submenu {
    position: relative;
}

.submenu-item.has-submenu > .submenu-link {
    position: relative;
}

.submenu-item.has-submenu > .submenu-link .submenu-toggle {
    transition: transform var(--transition-fast);
}

.submenu-item.open > .submenu-link .submenu-toggle {
    transform: rotate(180deg);
}

.submenu-item.open > .submenu {
    max-height: 800px;
}

/* ✅ Submenu niveau 2 (sous-sous-menu) */
.submenu-level-2 {
    padding-left: var(--space-md);
}

.submenu-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg) var(--space-sm) calc(var(--space-lg) + 40px);
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.submenu-link:hover {
    color: var(--accent-primary);
    background-color: var(--bg-tertiary);
}

.submenu-link.active {
    color: var(--accent-primary);
    font-weight: var(--font-weight-semibold);
    background-color: var(--bg-tertiary);
}

/* ✅ Chevron toggle icon styling */
.submenu-toggle {
    margin-left: auto;
    font-size: var(--font-size-sm);
    transition: transform var(--transition-fast);
}

/* ✅ Indentation niveau 2 */
.submenu-level-2 .submenu-link {
    padding-left: calc(var(--space-lg) + 60px);
    font-size: calc(var(--font-size-sm) * 0.95);
}

/* ========================================
   FOOTER
   ======================================== */

.main-footer {
    background-color: var(--bg-secondary);
    border-top: 2px solid var(--border-primary);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-link {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent-primary);
}

/* ========================================
   SCROLLBAR CUSTOM
   ======================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-primary) var(--bg-secondary);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .main-content {
        margin-left: 0;
        padding: var(--space-md);
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }

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

    .header-brand span {
        display: none;
    }

    .user-name {
        display: none;
    }
}

@media (max-width: 480px) {
    .main-header {
        padding: 0 var(--space-md);
    }

    .theme-toggle span {
        display: none;
    }
}

/* =================================================================
   ✅ PHASE 2 TASK 1: LAZY LOADING MENU ANIMATIONS
   ================================================================= */

/* Lazy sentinel invisible */
.menu-lazy-sentinel {
    height: 1px;
    opacity: 0;
    pointer-events: none;
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Animation fade-in pour lazy items */
@keyframes menu-item-fade-in {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.menu-item {
    animation: menu-item-fade-in 0.2s ease-out;
}

/* Skeleton loading (optionnel pour feedback visuel) */
.menu-item.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-secondary) 25%,
        var(--bg-tertiary) 50%,
        var(--bg-secondary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* =================================================================
   ✅ PHASE 2 TASK 3: OFFLINE NOTICE UI
   ================================================================= */

.sidebar-offline-notice {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm, 0.5rem);
    padding: var(--space-md, 1rem);
    background-color: var(--warning-bg, #fff3cd);
    color: var(--warning-text, #856404);
    border-bottom: 1px solid var(--warning-border, #ffeeba);
    font-size: var(--font-size-sm, 0.875rem);
    z-index: 10;
    transition: opacity 0.3s ease;
}

.sidebar-offline-notice i {
    font-size: var(--font-size-lg, 1.125rem);
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    .sidebar-offline-notice {
        background-color: rgba(255, 193, 7, 0.15);
        color: var(--warning, #ffc107);
        border-bottom-color: rgba(255, 193, 7, 0.3);
    }
}