/**
 * Layout - Littébac
 * Header, navigation, footer
 */

/* Header - Design studieux et professionnel */
header {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

header nav {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--spacing-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

header nav .nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex: 1;
}

header nav > a,
header nav .nav-links > a {
    color: var(--color-white);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    position: relative;
}

header nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background-color: var(--color-white);
    transition: transform var(--transition-base);
    border-radius: var(--border-radius-full);
}

header nav a:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
}

header nav a:hover::after {
    transform: translateX(-50%) scaleX(1);
}

header nav .nav-links {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
}

header nav .logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-white);
    font-family: var(--font-family-heading);
    letter-spacing: var(--letter-spacing-tight);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-base);
}

header nav .logo:hover {
    transform: scale(1.05);
}

/* Mobile menu toggle button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    gap: 5px;
    z-index: 1002;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    min-height: 40px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-white);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Dropdown menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    background: none;
    border: none;
    color: var(--color-white);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    font-size: inherit;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    position: relative;
}

.dropdown-toggle:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
}

.dropdown-toggle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background-color: var(--color-white);
    transition: transform var(--transition-base);
    border-radius: var(--border-radius-full);
}

.dropdown-toggle:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.dropdown-toggle[aria-expanded="true"] {
    background-color: rgba(255, 255, 255, 0.15);
}

.dropdown-toggle::before {
    content: '▼';
    font-size: 0.7em;
    transition: transform var(--transition-fast);
    display: inline-block;
    margin-left: var(--spacing-1);
    position: relative;
    z-index: 1;
}

.dropdown-toggle[aria-expanded="true"]::before {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--spacing-2));
    left: 0;
    margin-top: var(--spacing-1);
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15), 0 4px 10px rgba(0, 0, 0, 0.1);
    min-width: 220px;
    padding: var(--spacing-2) 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.95);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
    z-index: 1001;
    border: var(--border-width) solid var(--color-gray-200);
    overflow: hidden;
    pointer-events: none;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-3) var(--spacing-5);
    color: var(--color-gray-700);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: var(--font-weight-medium);
    border-left: 3px solid transparent;
}

.dropdown-menu a:hover {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    padding-left: var(--spacing-6);
}

.dropdown-menu li:first-child a {
    border-top-left-radius: var(--border-radius-md);
    border-top-right-radius: var(--border-radius-md);
}

.dropdown-menu li:last-child a {
    border-bottom-left-radius: var(--border-radius-md);
    border-bottom-right-radius: var(--border-radius-md);
}

/* Main content */
main {
    flex: 1;
    padding: 0;
    min-height: calc(100vh - var(--header-height) - 200px);
    background: var(--gradient-warm);
    position: relative;
}

main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(180deg, rgba(107, 68, 35, 0.03) 0%, transparent 100%);
    pointer-events: none;
}

main > .alert {
    max-width: var(--container-max-width);
    margin: var(--spacing-6) auto;
    margin-bottom: var(--spacing-6);
    margin-top: var(--spacing-6);
    padding-left: var(--spacing-6);
    padding-right: var(--spacing-6);
}

/* Footer - Design élégant et discret */
footer {
    background: linear-gradient(180deg, var(--color-gray-800) 0%, var(--color-gray-900) 100%);
    color: var(--color-gray-300);
    padding: var(--spacing-12) var(--spacing-6);
    margin-top: auto;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.3;
}

footer .container {
    text-align: center;
}

footer p {
    margin: 0;
    color: var(--color-gray-400);
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    font-size: var(--font-size-sm);
    letter-spacing: var(--letter-spacing-wide);
}

/* Responsive header */
@media (max-width: 768px) {
    header nav {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-2) var(--spacing-3);
        gap: 0;
    }
    
    header nav .nav-header {
        width: 100%;
        margin-bottom: 0;
    }
    
    header nav .logo {
        font-size: var(--font-size-lg);
    }
    
    .mobile-menu-toggle {
        display: flex !important;
        flex-shrink: 0;
    }
    
    header nav .nav-links {
        width: 100%;
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0s linear 0.3s;
        padding: 0;
        margin: 0;
        border: none;
    }
    
    header nav .nav-links.mobile-open {
        max-height: 800px;
        opacity: 1;
        visibility: visible;
        padding-top: var(--spacing-2);
        transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0s;
        gap: var(--spacing-1);
    }
    
    header nav .nav-links a {
        width: 100%;
        text-align: left;
        padding: var(--spacing-2) var(--spacing-3);
        margin: 0;
    }
    
    .dropdown {
        width: 100%;
    }
    
    .dropdown-toggle {
        width: 100%;
        text-align: left;
        justify-content: space-between;
    }
    
    .dropdown-menu {
        position: static;
        width: 100%;
        margin-top: 0;
        box-shadow: var(--shadow-md);
        border: var(--border-width) solid var(--color-gray-200);
        transform: none;
        max-height: 0;
        overflow: hidden;
        padding: 0;
        margin: 0;
        border: none;
        transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0s linear 0.3s, padding 0.3s ease, margin 0.3s ease;
    }
    
    .dropdown-menu.show {
        transform: none;
        max-height: 500px;
        padding: var(--spacing-2) 0;
        margin-top: var(--spacing-2);
        border: var(--border-width) solid var(--color-gray-200);
        transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0s, padding 0.3s ease, margin 0.3s ease;
    }
}

/* Centre de notifications */
.notification-dropdown {
    position: relative;
}

.notification-toggle {
    position: relative;
    padding: var(--spacing-2) var(--spacing-3) !important;
}

.notification-icon {
    font-size: 1.2em;
    line-height: 1;
}

.notification-badge {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--color-error, #ef4444);
    color: var(--color-white);
    border-radius: var(--border-radius-full);
    font-size: 0.7em;
    font-weight: var(--font-weight-bold);
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    transform: translate(25%, -25%);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.notification-menu {
    min-width: 320px;
    max-width: 400px;
    max-height: 500px;
    overflow-y: auto;
    right: 0;
    left: auto;
}

.notification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-50);
    position: sticky;
    top: 0;
    z-index: 1;
}

.notification-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.notification-view-all {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.notification-view-all:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.notification-list {
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    display: block;
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--color-gray-100);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    color: inherit;
    position: relative;
}

.notification-item:hover {
    background-color: var(--color-gray-50);
    text-decoration: none;
    color: inherit;
}

.notification-item.notification-unread {
    background-color: rgba(107, 68, 35, 0.06); /* Marron très léger et doux */
    border-left: 3px solid var(--color-primary);
    font-weight: var(--font-weight-medium);
    position: relative;
}

.notification-item.notification-unread::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background-color: var(--color-primary);
    border-radius: var(--border-radius-full);
    margin-left: -5.5px;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.8);
}

.notification-item.notification-unread:hover {
    background-color: rgba(107, 68, 35, 0.1);
    transform: translateX(2px);
}

.notification-item.notification-read {
    background-color: transparent;
}

.notification-item.notification-read:hover {
    background-color: var(--color-gray-50);
}

.notification-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.notification-title {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    font-size: var(--font-size-base);
}

.notification-message {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.notification-time {
    color: var(--color-gray-500);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-1);
}

.notification-loading,
.notification-empty,
.notification-error {
    padding: var(--spacing-8) var(--spacing-5);
    text-align: center;
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

/* Responsive pour les notifications */
@media (max-width: 768px) {
    .notification-menu {
        min-width: 100%;
        max-width: 100%;
        right: 0;
        left: 0;
        position: static;
        max-height: 0;
        overflow: hidden;
        padding: 0;
        margin: 0;
        border: none;
        transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0s linear 0.3s, padding 0.3s ease, margin 0.3s ease;
    }
    
    .notification-menu.show {
        max-height: 500px;
        padding: var(--spacing-2) 0;
        margin-top: var(--spacing-2);
        border: var(--border-width) solid var(--color-gray-200);
        transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0s, padding 0.3s ease, margin 0.3s ease;
    }
    
    .notification-header {
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .notification-item {
        padding: var(--spacing-3) var(--spacing-4);
    }
}