.menu {
    width: auto;
    min-width: var(--menu-min-width, 200px);
    max-width: var(--menu-max-width, 250px);
    height: calc(100vh - var(--header-height, 70px));
    background-color: transparent;
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-md);
    overflow-y: auto;
    position: sticky;
    top: 70px;
    left: 0;
    z-index: 5;
    transition: all 0.3s var(--ease-out-back);
    box-shadow: var(--box-shadow, 2px 0 10px rgba(0, 0, 0, 0.05));
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
    will-change: width, transform;
    contain: content;
}

.menu::-webkit-scrollbar {
    width: var(--scrollbar-width, 6px);
}

.menu::-webkit-scrollbar-track {
    background: transparent;
}

.menu::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: var(--border-radius-sm, 6px);
}

.container {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-md);
    padding: 0;
    min-height: calc(100vh - 70px);
    margin-top: var(--header-height, 70px);
    max-width: var(--container-max-width, 1800px);
    margin-left: 0;
    margin-right: 0;
}

.tools {
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-xs);
    min-height: calc(100vh - var(--header-height, 70px) - 2rem);
    flex: 1;
    position: relative;
    overflow-y: auto;
    z-index: 1;
    transition: all 0.3s var(--ease-out-back);
    box-shadow: var(--box-shadow, 0 4px 12px rgba(0, 0, 0, 0.08));
    border: 1px solid var(--border-color);
}

/* Adaptations pour les écrans de différentes tailles */
@media (max-width: 1200px) {
    .menu {
        min-width: var(--menu-min-width-md, 180px);
        max-width: var(--menu-max-width-md, 250px);
    }
}

@media (max-width: 992px) {
    .menu {
        min-width: var(--menu-min-width-sm, 160px);
        max-width: var(--menu-max-width-sm, 230px);
    }
    
    .menu-trigger {
        padding: var(--spacing-sm, 0.6rem) var(--spacing-md, 0.8rem);
        font-size: var(--font-size-sm, 0.95rem);
    }
    
    .submenu-item {
        padding: var(--spacing-xs, 0.4rem) var(--spacing-md, 0.8rem);
        font-size: var(--font-size-xs, 0.9rem);
    }
}

@media (max-width: 768px) {
    .menu {
        position: fixed;
        left: 0;
        width: 85%;
        min-width: unset;
        max-width: var(--menu-max-width-mobile, 320px);
        height: 100vh;
        top: 0;
        margin-top: 0;
        padding-top: calc(var(--header-height, 70px) + var(--spacing-md));
        transition: transform var(--transition-duration) var(--ease-out-back), 
                    box-shadow var(--transition-duration) var(--ease-in-out);
        box-shadow: none;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        transform: translateX(-100%);
        will-change: transform;
        z-index: 150;
        visibility: hidden;
        opacity: 0;
    }

    .menu.active {
        transform: translateX(0);
        box-shadow: 5px 0 25px rgba(0, 0, 0, 0.2);
        visibility: visible;
        opacity: 1;
    }

    .container {
        grid-template-columns: 1fr;
        margin-top: var(--header-height, 70px);
        padding: 0;
    }

    .tools {
        position: relative;
        left: 0;
        right: 0;
        top: 0;
        width: 100%;
        padding: var(--spacing-xs);
        margin-top: var(--spacing-sm);
    }
}

/* Styles pour le menu et les sous-menus */
.menu-category {
    margin-bottom: var(--spacing-md, 1rem);
    contain: content;
}

.menu-trigger {
    width: 100%;
    padding: var(--spacing-md, 0.75rem) var(--spacing-lg, 1rem);
    background: none;
    border: none;
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-size: var(--font-size, 1rem);
    text-align: left;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm, 0.5rem);
    cursor: pointer;
    transition: all 0.2s ease;
    overflow: visible;
    position: relative;
    will-change: transform;
    contain: content;
}

.menu-trigger span {
    flex: 1;
    word-wrap: break-word;
    white-space: normal;
    line-height: 1.3;
}

.menu-trigger:hover {
    background-color: var(--hover-color);
    transform: translateX(3px);
}

.menu-trigger:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.menu-trigger i {
    width: var(--icon-width, 1.5rem);
    text-align: center;
    flex-shrink: 0;
    transition: transform 0.2s var(--ease-out-back);
    will-change: transform;
    display: flex;
    align-items: center;
    justify-content: center;
}

.submenu-icon {
    margin-left: auto;
    font-size: var(--font-size-xs, 0.8rem);
    transition: transform 0.3s var(--ease-out-back);
    flex-shrink: 0;
    will-change: transform;
}

.menu-trigger[aria-expanded="true"] .submenu-icon {
    transform: rotate(180deg);
}

/* Animation pour l'expansion des sous-menus */
@keyframes expandMenu {
    from {
        max-height: 0;
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        max-height: 1000px;
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes collapseMenu {
    from {
        max-height: 1000px;
        opacity: 1;
        transform: translateY(0);
    }
    to {
        max-height: 0;
        opacity: 0;
        transform: translateY(-10px);
    }
}

.submenu {
    height: auto;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding: 0 0.5rem;
    margin-top: 0;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: max-height 0.4s var(--ease-out-back),
                opacity 0.3s ease,
                padding 0.3s ease,
                margin 0.3s ease;
    will-change: max-height, opacity, transform;
    transform: translateY(-10px);
    contain: content;
}

.submenu.active {
    max-height: 1000px;
    opacity: 1;
    padding: 0.5rem;
    margin-top: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transform: translateY(0);
    animation: expandMenu 0.4s var(--ease-out-back);
}

.submenu-item {
    width: 100%;
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-size: 0.95rem;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    will-change: transform;
    contain: content;
}

.submenu-item span {
    flex: 1;
    word-wrap: break-word;
    white-space: normal;
    line-height: 1.3;
}

.submenu-item:hover {
    background-color: var(--hover-color);
    transform: translateX(3px);
}

.submenu-item:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.submenu-item i {
    width: var(--icon-width, 1.5rem);
    text-align: center;
    transition: transform 0.2s ease;
    margin-right: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.submenu-item:hover i {
    transform: scale(1.1);
}

/* Overlay pour mobile */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s var(--ease-in-out);
    will-change: opacity;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

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

/* Style du header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-color);
}

/* Style du bouton hamburger */
.menu-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    line-height: 0;
    padding: 0;
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.menu-toggle i {
    font-size: 1.2rem;
    margin: 0;
}

.menu-toggle i.fas.fa-bars {
    display: block;
    margin: 0 auto;
    line-height: 1;
}

.hamburger {
    width: var(--toggle-width, 24px);
    height: var(--toggle-height, 18px);
    position: relative;
    margin: 0 auto;
}

.hamburger span {
    display: block;
    position: absolute;
    height: var(--hamburger-bar-height, 2px);
    width: 100%;
    background: var(--text-color);
    border-radius: var(--border-radius-xs, 2px);
    opacity: 1;
    left: 0;
    transform: rotate(0deg);
    transition: .25s ease-in-out;
}

.hamburger span:nth-child(1) {
    top: 0px;
}

.hamburger span:nth-child(2),
.hamburger span:nth-child(3) {
    top: 8px;
}

.hamburger span:nth-child(4) {
    top: 16px;
}

.menu-toggle.active .hamburger span:nth-child(1) {
    top: 8px;
    width: 0%;
    left: 50%;
}

.menu-toggle.active .hamburger span:nth-child(2) {
    transform: rotate(45deg);
}

.menu-toggle.active .hamburger span:nth-child(3) {
    transform: rotate(-45deg);
}

.menu-toggle.active .hamburger span:nth-child(4) {
    top: 8px;
    width: 0%;
    left: 50%;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
}

@media (min-width: 769px) {
    .menu-toggle {
        display: none;
    }
}

/* Mode sombre */
[data-theme="dark"] .menu {
    background: var(--card-bg);
    border-color: var(--dark-border);
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .menu-trigger {
    background: var(--input-bg);
    color: var(--text-color);
    border-color: var(--dark-border);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .menu-trigger:hover {
    background: var(--hover-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .menu-trigger i {
    background: rgba(var(--primary-color-rgb), 0.15);
}

[data-theme="dark"] .menu-trigger:hover i {
    background: rgba(var(--primary-color-rgb), 0.25);
}

[data-theme="dark"] .submenu {
    background: var(--card-bg);
    border-color: var(--dark-border);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .submenu-item {
    color: var(--text-color);
}

[data-theme="dark"] .submenu-item:hover {
    background: var(--hover-color);
    color: var(--primary-color);
}

[data-theme="dark"] .submenu-item i {
    background: rgba(var(--primary-color-rgb), 0.15);
}

[data-theme="dark"] .submenu-item:hover i {
    background: rgba(var(--primary-color-rgb), 0.25);
}

[data-theme="dark"] .tools {
    border-color: var(--dark-border);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.25);
}

[data-theme="dark"] .hamburger span {
    background: var(--text-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

/* Accessibilité */
.menu-trigger:focus,
.submenu-item:focus,
.menu-toggle:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Ajout d'un indicateur pour les sous-menus actifs */
.menu-category.has-active-item > .menu-trigger {
    color: var(--primary-color);
    font-weight: 600;
}

.menu-category.has-active-item > .menu-trigger i {
    transform: scale(1.1);
    background: rgba(var(--primary-color-rgb), 0.2);
}

/* Bouton de réduction du menu */
.toggle-menu-width {
    position: absolute;
    top: 15px;
    right: -14px;
    width: 28px;
    height: 28px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 20;
    transition: transform 0.3s ease, background 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    will-change: transform;
    color: var(--text-color);
}

.toggle-menu-width:hover {
    transform: scale(1.1);
    background: var(--primary-color-light);
}

.toggle-menu-width i {
    font-size: 0.9rem;
    visibility: visible;
}

.menu.compact .toggle-menu-width {
    transform: rotate(180deg);
    right: -14px;
}

.menu.compact .toggle-menu-width:hover {
    transform: rotate(180deg) scale(1.1);
    background: var(--primary-color-light);
}

.menu.compact {
    width: auto;
    min-width: 60px;
    max-width: 60px;
}

.menu.compact .menu-trigger span,
.menu.compact .submenu-item span {
    width: 0;
    opacity: 0;
    display: none;
}

.menu.compact .submenu-icon {
    display: none;
}

.menu.compact ~ .tools {
    width: calc(100% - 60px - var(--spacing-md));
}

@media (max-width: 768px) {
    .toggle-menu-width {
        display: none;
    }
    
    /* Garde les textes visibles en mode mobile même quand menu compact */
    .menu.compact {
        width: 85%;
        max-width: 320px;
    }
    
    .menu.compact .menu-trigger span,
    .menu.compact .submenu-item span,
    .menu.compact .submenu-icon {
        display: inline-flex;
    }
    
    .menu.compact ~ .tools {
        left: 0;
    }
}

.converter-menu {
    background-color: var(--bg-color-dark);
    width: 250px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
}

.converter-menu-header {
    padding: var(--spacing-md);
    color: var(--text-color-dark);
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
}

.converter-menu-items {
    list-style: none;
    padding: 0;
}

.converter-menu-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    color: var(--text-color-dark);
    cursor: pointer;
    transition: background-color 0.2s;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.converter-menu-item:hover {
    background-color: var(--button-bg-hover-dark);
}

.converter-menu-item i {
    margin-right: var(--spacing-md);
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}