/* ============================================================================
   VARIABLES CSS
   ============================================================================ */
:root {
    /* Couleurs principales CSIG */
    --csig-primary: #0d4786;
    --csig-primary-dark: #0a365f;
    --csig-primary-light: #1a5ba3;
    --csig-secondary: #f8f9fa;
    --csig-accent: #ffc107;
    
    /* Couleurs système */
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f8f9fa;
    --gray-100: #e9ecef;
    --gray-200: #dee2e6;
    --gray-300: #ced4da;
    --gray-400: #adb5bd;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;
    --gray-900: #1a1d20;
    
    /* Couleurs d'état */
    --success: #28a745;
    --info: #17a2b8;
    --warning: #ffc107;
    --danger: #dc3545;
    
    /* Typographie */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-secondary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Espacements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Ombres */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --shadow-xl: 0 1.5rem 4rem rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    --transition-slow: all 0.5s ease;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================================================
   RÉINITIALISATION ET BASE
   ============================================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ============================================================================
   HEADER PRINCIPAL
   ============================================================================ */
.main-header {
    position: relative;
    z-index: var(--z-fixed);
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

/* Première zone : Logo, Recherche, Personna */
.header-top {
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-200);
    background: var(--white);
}

.header-top .navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--csig-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.header-top .navbar-brand img {
    transition: var(--transition);
}

.header-top .navbar-brand:hover img {
    transform: scale(1.05);
}

.header-top .brand-text {
    font-family: var(--font-secondary);
    font-weight: 800;
}

/* Barre de recherche */
.search-container {
    max-width: 500px;
    margin: 0 auto;
}

.search-form .input-group {
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.search-input {
    border: 1px solid var(--gray-200);
    padding: 0.75rem 1rem;
    padding-right: 3rem;
    font-size: 0.95rem;
    width: 100%;
}

.search-input:focus {
    border-color: var(--csig-primary);
    box-shadow: 0 0 0 0.2rem rgba(13, 71, 134, 0.25);
}

.search-btn {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: var(--csig-primary);
    color: var(--white);
    border: none;
    padding: 0;
    height: 100%;
    width: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 2;
}

.search-btn:hover {
    background: var(--csig-primary-dark);
}

/* Bouton personna */
.personna-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: var(--csig-primary);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 0.9rem;
    white-space: nowrap;
    width: fit-content;
}

.personna-btn:hover {
    background: var(--csig-primary-dark);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
    text-decoration: none;
}

.personna-text {
    font-size: 0.85rem;
    font-weight: 600;
}

/* Bouton de recherche mobile */
.search-mobile-btn {
    background: var(--csig-primary);
    color: var(--white);
    border: none;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: var(--transition);
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-mobile-btn:hover {
    background: var(--csig-primary-dark);
    transform: scale(1.05);
}

/* Deuxième zone : Navigation */
.navbar {
    padding: 0.75rem 0;
    background: var(--white);
}

.navbar-nav {
    gap: 1rem;
}

.nav-link {
    color: var(--csig-primary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--csig-primary-dark) !important;
    background: rgba(13, 71, 134, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--csig-accent);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* Dropdown */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow);
    border-radius: var(--radius-lg);
    padding: 0.5rem 0;
    margin-top: 0.5rem;
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    color: var(--gray-700);
    transition: var(--transition);
    border-radius: 0;
}

.dropdown-item:hover {
    background: rgba(13, 71, 134, 0.1);
    color: var(--csig-primary);
}

/* Menu burger mobile */
.navbar-toggler {
    border: none;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: var(--transition);
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler:hover {
    background: var(--gray-100);
}

/* Responsive header */
@media (max-width: 991.98px) {
    .header-top {
        padding: 0.75rem 0;
    }
    
    .search-container {
        max-width: 100%;
    }
    
    .navbar-nav {
        gap: 0.5rem;
        padding: 1rem 0;
    }
    
    .nav-link {
        padding: 0.75rem 1rem !important;
        border-radius: 0;
        border-bottom: 1px solid var(--gray-100);
    }
    
    .nav-link:hover {
        background: rgba(13, 71, 134, 0.05);
    }
    
    .dropdown-menu {
        border: none;
        box-shadow: none;
        background: var(--gray-50);
        margin-top: 0;
    }
    
    .dropdown-item {
        padding: 0.5rem 2rem;
    }
}

@media (max-width: 767.98px) {
    .header-top .navbar-brand {
        font-size: 1.25rem;
    }
    
    .personna-text {
        display: none; /* Masquer le texte "Je suis" sur mobile */
    }
    
    .search-mobile-btn {
        padding: 0.4rem 0.6rem;
    }
    
    /* Remplacer la barre de recherche par une icône sur mobile */
    .search-container {
        display: none;
    }
    
    .search-mobile-btn {
        display: flex !important;
    }
}

@media (max-width: 575.98px) {
    .header-top {
        padding: 0.5rem 0;
    }
    
    .header-top .navbar-brand img {
        width: 40px;
        height: 40px;
    }
    
    .header-top .navbar-brand {
        font-size: 1.1rem;
    }
    
    /* Masquer complètement le texte "Je suis" sur très petits écrans */
    .personna-text {
        display: none;
    }
    
    /* Ajuster la taille du bouton personna sur très petits écrans */
    .personna-btn {
        padding: 0.4rem 0.6rem;
        min-width: 2.5rem;
        justify-content: center;
    }
}

.navbar {
    padding: 1rem 0;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--csig-primary);
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--csig-primary-dark);
    transform: translateY(-1px);
}

.navbar-brand img {
    transition: var(--transition);
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.brand-text {
    font-family: var(--font-secondary);
    font-weight: 800;
    letter-spacing: -0.5px;
}



/* Bouton de recherche mobile */
.search-mobile-btn {
    background: var(--csig-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    transition: var(--transition);
}

.search-mobile-btn:hover {
    background: var(--csig-primary-dark);
    transform: scale(1.05);
}





/* ============================================================================
   CONTENU PRINCIPAL
   ============================================================================ */
.main-content {
    padding-top: 0; /* Plus de padding-top car header n'est plus fixed */
    min-height: calc(100vh - 80px);
}

/* ============================================================================
   FOOTER
   ============================================================================ */
.main-footer {
    background: linear-gradient(135deg, var(--csig-primary) 0%, var(--csig-primary-dark) 100%);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    position: relative;
}

.footer-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--csig-accent), var(--white), var(--csig-accent));
}

.footer-section {
    margin-bottom: 2rem;
}

.footer-title {
    color: var(--white);
    font-weight: 600;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--csig-accent);
}

.contact-info p {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    opacity: 0.9;
}

.contact-info i {
    width: 20px;
    margin-right: 0.75rem;
    color: var(--csig-accent);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: var(--transition);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--csig-accent);
    opacity: 1;
    padding-left: 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.social-link:hover {
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.social-link.facebook:hover { background: #1877f2; }
.social-link.twitter:hover { background: #1da1f2; }
.social-link.linkedin:hover { background: #0077b5; }
.social-link.youtube:hover { background: #ff0000; }
.social-link.instagram:hover { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }

.newsletter-signup h6 {
    color: var(--csig-accent);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.newsletter-signup p {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-bottom: 1rem;
}

.newsletter-form .input-group {
    border-radius: 50px;
    overflow: hidden;
}

.newsletter-form .form-control {
    border: none;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    backdrop-filter: blur(10px);
}

.newsletter-form .form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.newsletter-form .btn {
    background: var(--csig-accent);
    color: var(--csig-primary);
    border: none;
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    transition: var(--transition);
}

.newsletter-form .btn:hover {
    background: var(--white);
    transform: scale(1.05);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.2);
    margin: 2rem 0 1.5rem;
}

.footer-bottom {
    padding-top: 1.5rem;
}

.copyright {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.legal-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 1.5rem;
    justify-content: flex-end;
}

.legal-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
}

.legal-links a:hover {
    color: var(--csig-accent);
}

/* ============================================================================
   BOUTON RETOUR EN HAUT
   ============================================================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--csig-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: var(--z-tooltip);
    box-shadow: var(--shadow);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--csig-primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */
@media (max-width: 991.98px) {
    .search-container {
        display: none;
    }
    
    .personna-btn {
        margin-right: 0.5rem;
    }
    
    .personna-text {
        display: none;
    }
    
    .navbar-nav {
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--gray-200);
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 0;
        margin: 0;
        border-radius: 0;
    }
    
    .navbar-nav .nav-link::after {
        display: none;
    }
}

@media (max-width: 767.98px) {
    .navbar {
        padding: 0.75rem 0;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .navbar-brand img {
        width: 40px;
        height: 40px;
    }
    
    .main-content {
        padding-top: 70px;
    }
    
    .footer-content {
        text-align: center;
    }
    
    .legal-links {
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 575.98px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .navbar-brand img {
        width: 35px;
        height: 35px;
    }
    
    .personna-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
    
    .footer-content {
        padding: 0 1rem;
    }
}

/* ============================================================================
   ANIMATIONS ET TRANSITIONS
   ============================================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* ============================================================================
   UTILITAIRES
   ============================================================================ */
.text-csig-primary { color: var(--csig-primary) !important; }
.text-csig-secondary { color: var(--csig-secondary) !important; }
.text-csig-accent { color: var(--csig-accent) !important; }

.bg-csig-primary { background-color: var(--csig-primary) !important; }
.bg-csig-secondary { background-color: var(--csig-secondary) !important; }
.bg-csig-accent { background-color: var(--csig-accent) !important; }

.border-csig-primary { border-color: var(--csig-primary) !important; }
.border-csig-secondary { border-color: var(--csig-secondary) !important; }
.border-csig-accent { border-color: var(--csig-accent) !important; }

.shadow-csig { box-shadow: 0 0.5rem 1rem rgba(13, 71, 134, 0.15) !important; }
.shadow-csig-lg { box-shadow: 0 1rem 3rem rgba(13, 71, 134, 0.2) !important; }

.rounded-csig { border-radius: var(--radius) !important; }
.rounded-csig-lg { border-radius: var(--radius-lg) !important; }

.transition { transition: var(--transition) !important; }
.transition-fast { transition: var(--transition-fast) !important; }
.transition-slow { transition: var(--transition-slow) !important; }