/* =====================================================================
   CMS Simple LHK — Layout Premium SaaS 2026
   Sidebar collapsible + Header glass + Responsive avancé
   Max content: 2048px pour exploitation 4K
   ===================================================================== */

/* ── Admin Layout ─────────────────────────────────────────────────── */

.admin-layout {
    display: flex;
    min-height: 100vh;
    background: var(--bg-body);
}

/* ── Sidebar ──────────────────────────────────────────────────────── */

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: var(--text-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 50;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: hsla(0, 0%, 100%, 0.08) transparent;
    border-right: 1px solid hsla(0, 0%, 100%, 0.04);
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: hsla(0, 0%, 100%, 0.1);
    border-radius: 4px;
}

/* ── Sidebar Collapsed State ─────────────────────────────────────── */

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

.sidebar.collapsed .sidebar-brand-text,
.sidebar.collapsed .sidebar-brand-version,
.sidebar.collapsed .sidebar-section-title,
.sidebar.collapsed .sidebar-user-info {
    opacity: 0;
    visibility: hidden;
    width: 0;
    overflow: hidden;
    transition: opacity 0.15s ease, visibility 0.15s ease;
}

.sidebar.collapsed .sidebar-brand {
    justify-content: center;
    padding: var(--space-4);
}

.sidebar.collapsed .sidebar-link {
    justify-content: center;
    padding: var(--space-3) var(--space-2);
}

.sidebar.collapsed .sidebar-link span:not(.sidebar-link-icon) {
    opacity: 0;
    width: 0;
    overflow: hidden;
    white-space: nowrap;
}

.sidebar.collapsed .sidebar-link-badge {
    display: none;
}

.sidebar.collapsed .sidebar-user-trigger {
    justify-content: center;
    padding: var(--space-3) var(--space-2);
}

.sidebar.collapsed .sidebar-user-trigger .user-dropdown-chevron {
    display: none;
}

.sidebar.collapsed .user-dropdown {
    left: calc(var(--sidebar-collapsed) + 8px);
    right: auto;
    bottom: 0;
    width: 240px;
}


/* Collapse Toggle Button — inside brand area */
.sidebar-collapse-btn {
    position: absolute;
    top: 50%;
    right: var(--space-3);
    transform: translateY(-50%);
    width: 26px;
    height: 26px;
    background: hsla(0, 0%, 100%, 0.06);
    border: 1px solid hsla(0, 0%, 100%, 0.08);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 51;
    color: var(--text-sidebar-muted);
    transition: all 0.2s ease;
    opacity: 0;
    padding: 0;
}

.sidebar:hover .sidebar-collapse-btn,
.sidebar-collapse-btn:focus-visible {
    opacity: 1;
}

.sidebar-collapse-btn:hover {
    background: hsla(0, 0%, 100%, 0.12);
    color: white;
    border-color: hsla(0, 0%, 100%, 0.15);
}

.sidebar.collapsed .sidebar-collapse-btn {
    opacity: 1;
    right: 50%;
    top: var(--space-5);
    transform: translateX(50%);
}


/* ── Sidebar Brand ───────────────────────────────────────────────── */

.sidebar-brand {
    padding: var(--space-5) var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    border-bottom: 1px solid hsla(0, 0%, 100%, 0.06);
    flex-shrink: 0;
    position: relative;
    min-height: 72px;
}

.sidebar-brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 12px hsla(217, 91%, 60%, 0.3);
}

.sidebar-brand-text {
    font-size: var(--text-base);
    font-weight: 600;
    white-space: nowrap;
    transition: opacity 0.2s ease;
}

.sidebar-brand-version {
    font-size: var(--text-xs);
    color: var(--text-sidebar-muted);
    transition: opacity 0.2s ease;
}

/* ── Sidebar Navigation ──────────────────────────────────────────── */

.sidebar-nav {
    padding: var(--space-3);
    flex: 1;
}

.sidebar-section {
    margin-bottom: var(--space-4);
}

.sidebar-section-title {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-sidebar-muted);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-1);
    transition: opacity 0.2s ease;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 0.5rem var(--space-3);
    border-radius: var(--radius-md);
    color: var(--text-sidebar);
    font-size: 0.8125rem;
    font-weight: 400;
    transition: all 0.15s ease;
    text-decoration: none;
    position: relative;
    white-space: nowrap;
    margin-bottom: 1px;
}

.sidebar-link:hover {
    background: var(--bg-sidebar-hover);
    color: white;
}

.sidebar-link.active {
    background: hsla(217, 91%, 60%, 0.14);
    color: hsl(217, 91%, 70%);
    font-weight: 500;
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 55%;
    background: var(--color-primary);
    border-radius: 0 3px 3px 0;
    box-shadow: 0 0 8px hsla(217, 91%, 60%, 0.5);
}

.sidebar-link-icon {
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    opacity: 0.5;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.sidebar-link:hover .sidebar-link-icon {
    opacity: 0.9;
    transform: scale(1.05);
}

.sidebar-link.active .sidebar-link-icon {
    opacity: 1;
}

.sidebar-link-badge {
    margin-left: auto;
    background: var(--color-danger);
    color: white;
    padding: 0.1em 0.45em;
    border-radius: var(--radius-full);
    font-size: 0.6rem;
    font-weight: 700;
    min-width: 16px;
    text-align: center;
    line-height: 1.4;
    box-shadow: 0 0 6px hsla(0, 84%, 60%, 0.3);
}

/* ── Sidebar Footer ──────────────────────────────────────────────── */

.sidebar-footer {
    padding: var(--space-3);
    border-top: 1px solid hsla(0, 0%, 100%, 0.06);
    flex-shrink: 0;
    position: relative;
}

.sidebar-user-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-base);
    width: 100%;
    background: none;
    border: none;
    color: var(--text-sidebar);
    text-align: left;
}

.sidebar-user-trigger:hover {
    background: var(--bg-sidebar-hover);
}

.sidebar-user-trigger .user-dropdown-chevron {
    margin-left: auto;
    opacity: 0.4;
    transition: transform var(--transition-base), opacity var(--transition-base);
    flex-shrink: 0;
}

.sidebar-user-trigger:hover .user-dropdown-chevron {
    opacity: 0.8;
}

.sidebar-user-trigger.open .user-dropdown-chevron {
    transform: rotate(180deg);
    opacity: 1;
}

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--text-sm);
    color: white;
    flex-shrink: 0;
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
    transition: opacity 0.2s ease;
}

.sidebar-user-name {
    font-size: var(--text-sm);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: var(--text-xs);
    color: var(--text-sidebar-muted);
}

/* ── User Dropdown Popup (ChatGPT style) ────────────────────────── */

.user-dropdown {
    position: absolute;
    bottom: calc(100% + 8px);
    left: var(--space-3);
    right: var(--space-3);
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 200;
    padding: var(--space-2);
    display: none;
}

.user-dropdown.show {
    display: block;
    animation: slideUp 0.2s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--text-primary);
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition-base);
    background: none;
    border: none;
    width: 100%;
    text-align: left;
}

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

.user-dropdown-item .icon {
    opacity: 0.5;
    flex-shrink: 0;
}

.user-dropdown-item:hover .icon {
    opacity: 0.8;
}

.user-dropdown-sep {
    height: 1px;
    background: var(--border-default);
    margin: var(--space-2) 0;
}

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

.user-dropdown-item.danger:hover {
    background: var(--color-danger-light);
}

/* ── Main Content Area ────────────────────────────────────────────── */

.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-smooth);
}

.sidebar.collapsed~.admin-main,
.admin-layout.sidebar-collapsed .admin-main {
    margin-left: var(--sidebar-collapsed);
}

/* ── Admin Header ────────────────────────────────────────────────── */

.admin-header {
    height: var(--header-height);
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-6);
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: hsla(0, 0%, 100%, 0.85);
}

[data-theme="dark"] .admin-header {
    background: hsla(222, 47%, 11%, 0.88);
}

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

.admin-header-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
}

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

/* ── Admin Content ───────────────────────────────────────────────── */

.admin-content {
    flex: 1;
    padding: var(--space-6);
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    animation: fadeInUp 0.25s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Menu Burger Mobile ───────────────────────────────────────────── */

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--text-xl);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-base);
}

.sidebar-toggle:hover {
    background: var(--bg-surface-hover);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: hsla(0, 0%, 0%, 0.5);
    z-index: 45;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* ── Public Layout ────────────────────────────────────────────────── */

.public-layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.public-header {
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-default);
    padding: var(--space-4) var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 40;
}

.public-header-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--text-primary);
}

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

.public-header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.public-main {
    flex: 1;
    padding: var(--space-8) var(--space-6);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.public-footer {
    padding: var(--space-6);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--text-muted);
    border-top: 1px solid var(--border-default);
}

/* ── Auth Layout ──────────────────────────────────────────────────── */

.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    background: var(--bg-body);
    background-image: radial-gradient(circle at 30% 20%, hsla(217, 91%, 60%, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, hsla(199, 89%, 48%, 0.04) 0%, transparent 50%);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: fadeInUp 0.4s ease;
}

.auth-card-header {
    padding: var(--space-8) var(--space-8) var(--space-4);
    text-align: center;
}

.auth-card-logo {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: 700;
    color: white;
    margin: 0 auto var(--space-4);
    box-shadow: 0 4px 16px hsla(217, 91%, 60%, 0.3);
}

.auth-card-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-1);
}

.auth-card-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.auth-card-body {
    padding: var(--space-4) var(--space-8) var(--space-8);
}

.auth-card-footer {
    padding: var(--space-4) var(--space-8) var(--space-6);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-top: 1px solid var(--border-default);
    background: var(--bg-surface-hover);
}

/* ═══ Responsive ═════════════════════════════════════════════════════ */

/* Desktop — hide collapse button for mobile */
@media (min-width: 1025px) {
    .sidebar-collapse-btn {
        display: flex;
    }
}

/* Tablet & Mobile */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }

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

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

    .sidebar-overlay.active {
        display: block;
        animation: fadeIn 0.2s ease;
    }

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

    .sidebar.collapsed~.admin-main,
    .admin-layout.sidebar-collapsed .admin-main {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: flex;
    }

    .sidebar-collapse-btn {
        display: none;
    }

    /* Reset collapsed state on mobile */
    .sidebar.collapsed .sidebar-brand-text,
    .sidebar.collapsed .sidebar-brand-version,
    .sidebar.collapsed .sidebar-section-title,
    .sidebar.collapsed .sidebar-user-info {
        opacity: 1;
        visibility: visible;
        width: auto;
    }

    .sidebar.collapsed .sidebar-link {
        justify-content: flex-start;
        padding: var(--space-2) var(--space-3);
    }

    .sidebar.collapsed .sidebar-link span:not(.sidebar-link-icon) {
        opacity: 1;
        width: auto;
    }
}

@media (max-width: 768px) {
    .admin-content {
        padding: var(--space-4);
    }

    .admin-header {
        padding: 0 var(--space-4);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .public-main {
        padding: var(--space-6) var(--space-4);
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .auth-layout {
        padding: var(--space-3);
    }

    .auth-card-header,
    .auth-card-body,
    .auth-card-footer {
        padding-left: var(--space-5);
        padding-right: var(--space-5);
    }
}

/* Grand écran — exploitation 4K */
@media (min-width: 1920px) {
    .admin-content {
        max-width: 2048px;
        padding: var(--space-8);
    }

    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .public-main {
        max-width: 1600px;
    }
}

@media (min-width: 2560px) {
    .admin-content {
        max-width: 2048px;
    }
}


/* ═══ Notification Dropdown ══════════════════════════════════════════ */

.notif-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 380px;
    max-height: 440px;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 100;
    display: none;
    overflow: hidden;
}

.notif-dropdown.show {
    display: block;
    animation: slideDown 0.2s ease;
}

.notif-dropdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-default);
    background: var(--bg-surface-hover);
}

.notif-dropdown-body {
    max-height: 360px;
    overflow-y: auto;
}

.notif-item {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-default);
    cursor: pointer;
    transition: background var(--transition-base);
}

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

.notif-item:hover {
    background: var(--bg-surface-hover);
}

.notif-item.unread {
    background: hsla(217, 91%, 60%, 0.04);
    border-left: 3px solid var(--color-primary);
}

.notif-item-msg {
    font-size: var(--text-sm);
    line-height: 1.5;
    color: var(--text-primary);
}

.notif-item-time {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--space-1);
}

.notif-empty {
    padding: var(--space-8);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* ═══ Dropdown Menu ══════════════════════════════════════════════════ */

.dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    min-width: 180px;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    padding: var(--space-1) 0;
}

.dropdown-menu.show {
    display: block;
    animation: slideDown 0.15s ease;
}

.dropdown-menu a,
.dropdown-menu button {
    display: block;
    width: 100%;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-primary);
    text-decoration: none;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    transition: background var(--transition-base);
}

.dropdown-menu a:hover,
.dropdown-menu button:hover {
    background: var(--bg-surface-hover);
}

/* ═══ Animations ════════════════════════════════════════════════════ */

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ═══ Responsive Mobile — Notification ═══════════════════════════════ */

@media (max-width: 480px) {
    .notif-dropdown {
        width: calc(100vw - 2rem);
        right: -1rem;
    }
}

/* ═══ Tooltip ════════════════════════════════════════════════════════ */

.sidebar.collapsed .sidebar-link {
    position: relative;
}

.sidebar.collapsed .sidebar-link::after {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-sidebar);
    color: var(--text-sidebar);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.sidebar.collapsed .sidebar-link:hover::after {
    opacity: 1;
}

/* ═══ Skeleton Loader ════════════════════════════════════════════════ */

.skeleton {
    background: linear-gradient(90deg,
            var(--bg-surface-hover) 25%,
            var(--bg-surface) 50%,
            var(--bg-surface-hover) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite ease-in-out;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.skeleton-text {
    height: 14px;
    margin-bottom: var(--space-2);
}

.skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: var(--space-3);
}

.skeleton-card {
    height: 120px;
}

/* ═══ Utilities ══════════════════════════════════════════════════════ */

.mb-2 {
    margin-bottom: var(--space-2) !important;
}

.mb-4 {
    margin-bottom: var(--space-4) !important;
}

.mb-6 {
    margin-bottom: var(--space-6) !important;
}

.mt-4 {
    margin-top: var(--space-4) !important;
}

.mt-6 {
    margin-top: var(--space-6) !important;
}

.gap-4 {
    gap: var(--space-4) !important;
}

.gap-6 {
    gap: var(--space-6) !important;
}

.text-center {
    text-align: center !important;
}