:root {
    color-scheme: light dark;
    --color-bg: #ffffff;
    --color-bg-alt: #f5f7fa;
    --color-surface: #ffffff;
    --color-border: #d1d5db;
    --color-text: #111827;
    --color-muted: #6b7280;
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-danger: #dc2626;
    --color-success: #059669;
    --color-warning: #f59e0b;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.12);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.12);
    --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-bg-alt: #111c34;
    --color-surface: #1e293b;
    --color-border: #25304a;
    --color-text: #f8fafc;
    --color-muted: #cbd5f5;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    position: relative;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
    /* Optimisations de performance */
    transform: translate3d(0, 0, 0);
    will-change: contents;
    /* Réduction du re-rendu inutile */
    contain: layout style paint;
}

.background-light {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    will-change: transform;
    transition: background 0.5s ease;
    /* Optimisations de performance GPU */
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    perspective: 1000px;
    /* Réduction du re-rendu inutile */
    contain: layout style paint;
}

.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    transition: background-color 0.3s ease;
}

.particle-line {
    position: absolute;
    pointer-events: none;
    opacity: 0.3;
    transition: opacity 0.3s ease, stroke 0.3s ease;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Topbar mobile */
.mobile-topbar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    z-index: 20;
    padding: 0 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
}

.mobile-topbar__content {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    height: 100%;
    flex-wrap: nowrap;
}

.mobile-topbar__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.mobile-topbar__logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    flex-shrink: 0;
}

.mobile-topbar__toggle {
    position: static !important;
    display: flex !important;
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    margin: 0 !important;
    top: auto !important;
    left: auto !important;
    flex-shrink: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    padding: 8px;
    box-sizing: border-box;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-topbar__toggle:hover {
    background: var(--color-bg-alt);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    transform: scale(1.05);
}

.mobile-topbar__toggle.is-open {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.mobile-topbar__toggle.is-open span {
    background: #ffffff;
}

/* Bouton hamburger pour desktop */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 20;
    width: 44px;
    height: 44px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    padding: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-toggle--desktop {
    display: none;
}

.sidebar-toggle:hover {
    background: var(--color-bg-alt);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    transform: scale(1.05);
}

.sidebar-toggle.is-open {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.sidebar-toggle.is-open span {
    background: #ffffff;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 14;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.sidebar-overlay.is-visible {
    opacity: 1;
    pointer-events: all;
}

.sidebar-toggle span {
    width: 100%;
    height: 2.5px;
    background: var(--color-text);
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.sidebar-toggle.is-open span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.sidebar-toggle.is-open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.sidebar-toggle.is-open span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Sidebar verticale */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(to bottom, var(--color-surface) 0%, var(--color-bg-alt) 100%);
    border-right: 1px solid var(--color-border);
    z-index: 15;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

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

.sidebar::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
    transition: background 0.2s ease;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--color-muted);
}

[data-theme="dark"] .sidebar {
    background: linear-gradient(to bottom, var(--color-surface) 0%, rgba(30, 41, 59, 0.98) 100%);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
}

.sidebar__header {
    padding: 22px 24px;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    background: var(--color-surface);
    position: relative;
}

.sidebar__header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 24px;
    right: 24px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-border), transparent);
}

.sidebar__logo {
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: -0.5px;
    position: relative;
}

.sidebar__logo-img {
    flex-shrink: 0;
    display: block;
    width: 66px;
    height: 66px;
    object-fit: contain;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar__logo::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%) scaleX(0);
    width: 4px;
    height: 24px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar__logo:hover {
    color: var(--color-primary);
    transform: translateX(4px);
}

.sidebar__logo:hover .sidebar__logo-img {
    transform: scale(1.1);
}

.sidebar__logo:hover::before {
    transform: translateY(-50%) scaleX(1);
}

.sidebar__nav {
    flex: 1;
    padding: 24px 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar__nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 24px;
    margin: 0 12px;
    color: var(--color-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    opacity: 0;
    animation: slideInLeft 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.sidebar__nav-item:nth-child(1) { animation-delay: 0.05s; }
.sidebar__nav-item:nth-child(2) { animation-delay: 0.1s; }
.sidebar__nav-item:nth-child(3) { animation-delay: 0.15s; }
.sidebar__nav-item:nth-child(4) { animation-delay: 0.2s; }
.sidebar__nav-item:nth-child(5) { animation-delay: 0.25s; }
.sidebar__nav-item:nth-child(6) { animation-delay: 0.3s; }

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.sidebar__nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 3px;
    height: 0;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-primary-hover));
    border-radius: 0 2px 2px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar__nav-item:hover {
    background: linear-gradient(to right, var(--color-bg-alt), transparent);
    color: var(--color-text);
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.sidebar__nav-item:hover::before {
    height: 60%;
    transform: translateY(-50%) scaleY(1);
}

.sidebar__nav-item.is-active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: #ffffff;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
    transform: translateX(0);
}

.sidebar__nav-item.is-active::before {
    display: none;
}

.sidebar__nav-item.is-active .sidebar__nav-icon {
    transform: scale(1.1);
    filter: brightness(1.2);
}

.sidebar__nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar__nav-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 2.5;
}

.sidebar__nav-item:hover .sidebar__nav-icon {
    transform: scale(1.1) rotate(5deg);
}

.sidebar__nav-text {
    flex: 1;
    line-height: 1.4;
    position: relative;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar__nav-badge {
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(148, 163, 184, 0.2);
    color: var(--color-text);
}

.sidebar__nav-badge--beta {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

.sidebar__nav-item:hover .sidebar__nav-text {
    transform: translateX(2px);
}

.sidebar__nav-item.is-active .sidebar__nav-badge {
    background: rgba(255, 255, 255, 0.22);
    color: #ffffff;
}

.sidebar__footer {
    padding: 24px 20px;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
    background: var(--color-surface);
    position: relative;
}

.sidebar__footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 24px;
    right: 24px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-border), transparent);
}

.formation-switcher {
    width: 100%;
}

.formation-switcher select {
    width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 10px 14px;
    background: var(--color-bg-alt);
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.formation-switcher select:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.1);
    transform: translateY(-1px);
}

.formation-switcher select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.user-menu {
    position: relative;
}

.user-menu {
    width: 100%;
    position: relative;
}

.user-menu__button {
    width: 100%;
    border: none;
    background: var(--color-bg-alt);
    padding: 12px 14px;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.user-menu__button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.user-menu__button:hover {
    background: var(--color-surface);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.user-menu__button:hover::before {
    left: 100%;
}

.user-menu__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.95rem;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.user-menu__avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.user-menu__button:hover .user-menu__avatar {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.user-menu__email {
    flex: 1;
    text-align: left;
    font-size: 0.9rem;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu__chevron {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.6;
}

.user-menu.is-open .user-menu__chevron {
    transform: rotate(180deg);
}

.user-menu__button:hover .user-menu__chevron {
    opacity: 1;
}

.user-menu__dropdown {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    padding: 6px 0;
    display: none;
    width: 100%;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.user-menu--dropdown-down .user-menu__dropdown {
    top: calc(100% + 8px);
    bottom: auto;
    transform: translateY(-10px);
    z-index: 20;
}

.user-menu--dropdown-down.is-open .user-menu__dropdown {
    transform: translateY(0);
}

.user-menu__dropdown a.is-active {
    background: linear-gradient(to right, var(--color-bg-alt), transparent);
}

.user-menu__avatar--icon svg {
    width: 18px;
    height: 18px;
}

.user-menu--control .user-menu__button {
    padding: 8px 14px;
    min-height: 44px;
}

.user-menu--control .user-menu__avatar {
    width: 28px;
    height: 28px;
    font-size: 0.85rem;
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.25);
}

.user-menu--control .user-menu__avatar--icon svg {
    width: 16px;
    height: 16px;
}

.user-menu--fit {
    width: auto;
    display: inline-block;
}

.user-menu--fit .user-menu__button {
    width: auto;
}

.user-menu--fit .user-menu__email {
    flex: 0 0 auto;
}

.user-menu__email--autosize {
    display: grid;
    white-space: nowrap;
    overflow: visible;
    text-overflow: initial;
}

.user-menu__email-sizer,
.user-menu__email-current {
    grid-area: 1 / 1;
}

.user-menu__email-sizer {
    visibility: hidden;
}

.user-menu--fit .user-menu__dropdown {
    left: 0;
    right: auto;
    width: max-content;
    min-width: 100%;
}

.user-menu.is-open .user-menu__dropdown {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.user-menu__dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
}

.user-menu__badge {
    margin-left: auto;
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(148, 163, 184, 0.2);
    color: var(--color-text);
}

.user-menu__badge--test {
    background: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
}

.user-menu__dropdown a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.user-menu__dropdown a:hover {
    background: linear-gradient(to right, var(--color-bg-alt), transparent);
    padding-left: 20px;
}

.user-menu__dropdown a:hover::before {
    transform: scaleX(1);
}

.user-menu__dropdown-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    opacity: 0.7;
    transition: all 0.2s ease;
}

.user-menu__dropdown a:hover .user-menu__dropdown-icon {
    opacity: 1;
    transform: scale(1.1);
}

.user-menu.is-open .user-menu__dropdown {
    display: block;
}

.theme-toggle {
    width: 100%;
    border: none;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    padding: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
    color: #1f2937;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--color-primary);
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
    opacity: 0.1;
}

[data-theme="dark"] .theme-toggle {
    color: #f8fafc;
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    position: relative;
    z-index: 1;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s ease;
}

.theme-toggle:hover {
    background: var(--color-surface);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
    border-color: var(--color-border);
    color: #111827;
}

[data-theme="dark"] .theme-toggle:hover {
    color: #ffffff;
}

.theme-toggle:hover::before {
    width: 100px;
    height: 100px;
}

.theme-toggle:hover svg {
    transform: rotate(20deg) scale(1.15);
}

.container {
    padding: 24px;
    position: relative;
    z-index: 1;
    flex: 1;
    width: 100%;
    box-sizing: border-box;
}

.container--with-sidebar {
    margin-left: 280px;
    width: calc(100% - 280px);
    padding-top: 24px;
}

/* Normalisation de la largeur pour tous les contenus */
.container > * {
    max-width: 100%;
    box-sizing: border-box;
}

/* Exception pour auth-card qui doit garder sa largeur fixe */
.container > .auth-card {
    max-width: 360px !important;
    width: auto !important;
}

.container section,
.container .page-header,
.container .card-grid,
.container .table-wrapper,
.container .form,
.container .modal {
    max-width: 100%;
    box-sizing: border-box;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.page-header__subtitle {
    color: var(--color-muted);
    margin: 6px 0 0;
}

.page-header__actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.button {
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 20px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    min-height: 44px;
}

.button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.button:hover::before {
    width: 300px;
    height: 300px;
}

.button--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.button--primary:hover {
    background: linear-gradient(135deg, var(--color-primary-hover) 0%, var(--color-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.button--primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

.button--secondary {
    background: var(--color-bg-alt);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

.button--secondary:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
    transform: translateY(-2px);
}

.button--secondary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.1);
}

.button--ghost {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: none;
}

.button--ghost:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

.button--ghost:active {
    transform: translateY(0);
    background: var(--color-surface);
}

.button--danger {
    background: linear-gradient(135deg, var(--color-danger) 0%, #b91c1c 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

.button--danger:hover {
    background: linear-gradient(135deg, #b91c1c 0%, var(--color-danger) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
}

.button--danger:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}

.button--small {
    padding: 8px 14px;
    font-size: 0.85rem;
    min-height: 36px;
}

.button:disabled,
.button[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: var(--shadow-sm) !important;
}

.button:disabled:hover,
.button[disabled]:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
}

.button span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.button:hover span {
    transform: scale(1.05);
}

.alert {
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 16px;
    font-weight: 500;
}

.alert--success {
    background: rgba(5, 150, 105, 0.12);
    color: var(--color-success);
}

.alert--error {
    background: rgba(220, 38, 38, 0.12);
    color: var(--color-danger);
}

.alert--warning {
    background: rgba(245, 158, 11, 0.12);
    color: var(--color-warning);
}

.auth-card,
.container .auth-card,
.container > .auth-card {
    max-width: 360px !important;
    width: auto !important;
    margin: 120px auto;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
}

.auth-card__subtitle,
.auth-card__footer {
    color: var(--color-muted);
}


.form {
    display: grid;
    gap: 16px;
}

.form--card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.form__group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form__group--grow {
    flex: 1;
}

.form__row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.form__fieldset {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px;
}

.form__hint {
    margin-top: 0;
    margin-bottom: 16px;
    color: var(--color-muted);
}

.invite-toggle {
    display: grid;
    gap: 8px;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-alt);
}

.invite-toggle__switch {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.invite-toggle__switch input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

.invite-toggle__code {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.invite-toggle__code code {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.form__actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.form__actions--end {
    justify-content: flex-end;
}

.form__delete-form {
    display: inline;
    margin: 0;
}

.form__delete-warning {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form__delete-warning button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.formation-delete-card {
    margin-top: 24px;
    display: grid;
    gap: 16px;
}

.formation-delete-card__header h2 {
    margin: 0;
}

.formation-delete-card__content {
    display: grid;
    gap: 12px;
}

.modal--small {
    width: min(420px, 100%);
}

.form__error {
    font-size: 0.85rem;
    color: var(--color-danger);
}

.form label {
    font-weight: 500;
}

.form input,
.form textarea,
.form select {
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    padding: 10px 12px;
    background: var(--color-bg);
    color: var(--color-text);
}

.card-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.card-grid--formations {
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
}

.card-grid--quiz {
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 26px;
}

@media (max-width: 900px) {
    .card-grid--formations {
        grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    }

    .card-grid--quiz {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

@media (max-width: 640px) {
    .card-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .card-grid--formations {
        grid-template-columns: 1fr;
    }
}

.card {
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    position: relative;
    z-index: 1;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border);
}

.formation-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 200px;
}

.formation-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.formation-card__header-left {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.formation-card__header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.formation-card__header-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.formation-card__header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.formation-card__content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 0;
}

.formation-card__description {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.95rem;
    line-height: 1.5;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    line-clamp: 4;
    -webkit-box-orient: vertical;
}

.formation-card__details {
    list-style: none;
    margin: 16px 0 0;
    padding: 0;
    display: grid;
    gap: 8px;
}

.formation-card__details li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-alt);
}

.formation-card__details span {
    color: var(--color-muted);
    font-size: 0.9rem;
}

.formation-card__actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.formation-card__footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
}

.semester-manager {
    gap: 12px;
}

.semester-manager__summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.semester-manager__list {
    display: grid;
    gap: 12px;
}

.semester-manager__item {
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px;
    background: var(--color-bg-alt);
    display: grid;
    gap: 8px;
}

.semester-manager__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.semester-manager__empty {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.course-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 180px;
}

.course-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.course-card__header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.course-card__header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
    flex: 1;
    min-width: 0;
    word-wrap: break-word;
}

.course-card__header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.course-card__dot {
    width: 14px;
    height: 14px;
    min-width: 14px;
    min-height: 14px;
    border-radius: 999px;
    background: var(--course-color, var(--color-primary));
    position: relative;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.course-card__dot::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 999px;
    background: var(--course-color, var(--color-primary));
    opacity: 0.15;
    z-index: -1;
    transition: opacity 0.2s ease, inset 0.2s ease;
}

.course-card:hover .course-card__dot {
    transform: scale(1.1);
}

.course-card:hover .course-card__dot::before {
    opacity: 0.2;
    inset: -4px;
}

.course-card__prof {
    color: var(--color-muted);
    margin: 0 0 12px;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1.5;
}

.course-card__prof-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: var(--color-muted);
    opacity: 0.8;
}

.course-card__prof-icon svg {
    width: 100%;
    height: 100%;
}

.course-card__subgroup {
    color: var(--color-muted);
    font-size: 0.875rem;
    margin: 0 0 20px;
    padding: 8px 12px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--course-color, var(--color-primary));
    display: inline-block;
    max-width: fit-content;
}

.course-card__content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Bouton iconique réutilisable */
.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    text-decoration: none;
    flex-shrink: 0;
}

.icon-button svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}

.icon-button--small {
    width: 32px;
    height: 32px;
}

.icon-button--small svg {
    width: 16px;
    height: 16px;
}

.icon-button--edit {
    color: var(--color-primary);
}

.icon-button--edit:hover {
    background: rgba(79, 70, 229, 0.1);
    color: var(--color-primary);
    transform: translateY(-1px);
}

.icon-button--delete {
    color: var(--color-danger);
}

.icon-button--delete:hover {
    background: rgba(220, 38, 38, 0.1);
    color: var(--color-danger);
    transform: translateY(-1px);
}

.icon-button--primary {
    color: var(--color-primary);
}

.icon-button--primary:hover {
    background: rgba(79, 70, 229, 0.1);
    color: var(--color-primary);
    transform: translateY(-1px);
}

.icon-button--secondary {
    color: var(--color-muted);
}

.icon-button--secondary:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
    transform: translateY(-1px);
}

.icon-button--ghost {
    color: var(--color-muted);
}

.icon-button--ghost:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
    transform: translateY(-1px);
}

/* Tooltip */
.icon-button::before {
    content: attr(title);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    padding: 6px 10px;
    background: var(--color-text);
    color: var(--color-bg);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.icon-button::after {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--color-text);
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
    z-index: 10;
}

.icon-button:hover::before,
.icon-button:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

[data-theme="dark"] .icon-button::before {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

[data-theme="dark"] .icon-button::after {
    border-top-color: var(--color-surface);
}

/* Support pour les formulaires */
.course-card__action-form {
    display: inline-flex;
    margin: 0;
    padding: 0;
}

@media (max-width: 640px) {
    .course-card__header {
        gap: 10px;
        margin-bottom: 14px;
        padding-bottom: 14px;
        flex-wrap: wrap;
    }

    .course-card__header-left {
        gap: 10px;
        flex: 1;
        min-width: 0;
    }

    .course-card__header h2 {
        font-size: 1.15rem;
    }

    .course-card__header-actions {
        gap: 4px;
    }

    .course-card__dot {
        width: 12px;
        height: 12px;
        min-width: 12px;
        min-height: 12px;
    }

    .course-card__prof {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }

    .course-card__subgroup {
        font-size: 0.8rem;
        padding: 6px 10px;
        margin-bottom: 16px;
    }

    .icon-button {
        width: 32px;
        height: 32px;
    }

    .icon-button svg {
        width: 16px;
        height: 16px;
    }
}

.badge {
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--color-bg-alt);
}

.badge--success {
    background: rgba(5, 150, 105, 0.12);
    color: var(--color-success);
}

.badge--danger {
    background: rgba(220, 38, 38, 0.12);
    color: var(--color-danger);
}

.badge--neutral {
    background: rgba(107, 114, 128, 0.12);
    color: var(--color-muted);
}

.empty-state {
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    color: var(--color-muted);
    display: grid;
    gap: 16px;
}