/* css/style.css */

/* Variables CSS pour faciliter les modifications */
:root {
    --color-primary: #3498db;          /* Bleu vif (exemple) */
    --color-secondary: #2ecc71;        /* Vert (exemple) */
    --color-light-background: #F9FAFB;
    --color-dark-text: #2C3E50;
    --color-light-text: #ecf0f1;
    --color-accent-primary: #4CAF50; /* Vert Vif Éclatant */
    --color-accent-secondary: #FFC107; /* Jaune Doux et Chaleureux */
    --color-accent-tertiary: #9C27B0; /* Violet Subtil */
    --font-poppins: 'Poppins', sans-serif;
    --font-open-sans: 'Open Sans', sans-serif;
    --header-height: 80px; /* Hauteur standard de l'en-tête */
    --header-sticky-height: 65px; /* Hauteur de l'en-tête en mode sticky */
    --transition-speed: 0.3s;
    --color-background-header: #ffffff; /* Fond blanc pour la navbar */
    --color-background-header-dark: #2c3e50; /* Optionnel : fond sombre si navbar change de couleur */
}

/* Base Reset & Box Sizing */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-open-sans);
    line-height: 1.6;
    color: var(--color-dark-text);
    background-color: var(--color-light-background);
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: var(--color-accent-primary);
    transition: color var(--transition-speed) ease;
}

a:hover {
    color: var(--color-dark-text);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-poppins);
    color: var(--color-dark-text);
    margin-bottom: 0.8em;
    line-height: 1.2;
}

h1 { font-size: 2.8em; font-weight: 700; }
h2 { font-size: 2.2em; font-weight: 600; }
h3 { font-size: 1.8em; font-weight: 600; }
h4 { font-size: 1.4em; font-weight: 600; }

p {
    margin-bottom: 1em;
}

/* Header & Navigation */

.main-header {
    background-color: transparent; /* Commence transparent */
    padding: 25px 0; /* Plus de padding pour un look plus léger au début */
    position: fixed; /* Reste fixe en haut */
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: none; /* Pas d'ombre au début */
    transition: background-color var(--transition-speed) ease, padding var(--transition-speed) ease, box-shadow var(--transition-speed) ease, backdrop-filter var(--transition-speed) ease;
    height: var(--header-height);
    display: flex;
    align-items: center; /* Centrage vertical */
}

.main-header .header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.site-logo {
    display: flex;
    align-items: center;
    height: 100%;
}

.site-logo a {
    font-family: var(--font-poppins);
    font-weight: 700;
    font-size: 1.8em;
    color: #fff; /* Couleur par défaut blanche pour le texte */
    white-space: nowrap;
    transition: all var(--transition-speed) ease;
    letter-spacing: 0.05em;
    
    /* Effet de dégradé subtil */
    background: linear-gradient(45deg, #FFD700 30%, #4CAF50 70%); /* Plus de jaune, moins de vert */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    
    /* Ombre portée plus légère */
    filter: drop-shadow(0.5px 0.5px 1.5px rgba(0,0,0,0.2)); 
}


.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex; /* Pour aligner les éléments horizontalement */
}

.main-nav ul li {
    position: relative;
    margin-left: 30px;
}

.main-nav ul li a {
    display: block;
    padding: 10px 0;
    color: var(--color-light-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.main-nav ul li a:hover {
    color: var(--color-accent-primary);
}

/* Effet de soulignement créatif (blanc sur transparent, vert sur sticky) */
.main-nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: #fff; /* Couleur par défaut blanche pour le soulignement */
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    transition: width var(--transition-speed) ease-in-out, background-color var(--transition-speed) ease;
}

.main-nav ul li a:hover::after {
    width: 100%;
    background-color: var(--color-accent-primary);
}

/* Submenu Styling */
.main-nav .has-submenu {
    position: relative;
}

/* Supprime la flèche du sous-menu */
.main-nav .has-submenu > a .fa-chevron-down {
    display: none;
}

.main-nav .submenu {
    display: none; /* Caché par défaut */
    position: absolute;
    top: 100%; /* Juste en dessous du parent */
    left: 0;
    background-color: #fff; /* Fond du sous-menu */
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    min-width: 200px;
    z-index: 100;
    padding: 10px 0;
    border-radius: 5px;
}

.main-nav .submenu li {
    margin: 0;
}

.main-nav .submenu li a {
    padding: 8px 20px;
    font-size: 0.95em;
    white-space: nowrap;
    color: var(--color-dark-text);
}

.main-nav .submenu li a:hover {
    background-color: #f0f0f0;
    color: var(--color-accent-primary);
}

.main-nav .submenu li a::after {
    display: none;
}

.main-nav .has-submenu:hover > .submenu {
    display: block;
}

/* Hamburger menu toggle for mobile */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.8em;
    color: #fff; /* Couleur par défaut blanche pour l'icône */
    cursor: pointer;
    z-index: 1001;
    transition: color var(--transition-speed) ease;
}

/* Sticky Header Effect */
.main-header.sticky {
    background-color: rgba(249, 250, 251, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    padding: 15px 0;
    height: var(--header-sticky-height);
}

.main-header.sticky .site-logo a {
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: var(--color-dark-text);
    background-clip: unset;
    text-fill-color: unset;
    color: var(--color-dark-text);
    filter: none;
}



.main-header.sticky .main-nav ul li a,
.main-header.sticky .menu-toggle {
    color: var(--color-dark-text);
}

.main-header.sticky .main-nav ul li a::after {
    background-color: var(--color-accent-primary);
}

.sticky-nav .main-header {
    background-color: rgba(249, 250, 251, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    padding: 15px 0;
    height: var(--header-sticky-height); /* Assure une hauteur constante */
}

.sticky-nav .main-header .site-logo a {
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: var(--color-dark-text);
    background-clip: unset;
    text-fill-color: unset;
    color: var(--color-dark-text);
    filter: none;
}

.sticky-nav .main-header .main-nav ul li a,
.sticky-nav .main-header .menu-toggle {
    color: var(--color-dark-text);
}

.sticky-nav .main-header .main-nav ul li a::after {
    background-color: var(--color-accent-primary);
}

.sticky-nav .main-content {
    padding-top: calc(var(--header-sticky-height) + 40px); /* Utilise la hauteur du header sticky + marge */
    padding-bottom: 60px;
}

/*

### Global Button Styles

*/
.btn {
    display: inline-block;
    background-color: var(--color-dark-text);
    color: #fff;
    padding: 15px 30px;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color var(--transition-speed) ease, transform var(--transition-speed) ease;
}

.btn:hover {
    background-color: var(--color-accent-primary);
    transform: translateY(-3px);
}

.btn-primary {
    background-color: var(--color-dark-text);
}

/* ---

### Footer

```css */
.main-footer {
    background-color: var(--color-dark-text);
    color: #fff;
    padding: 60px 0 20px;
    font-size: 0.95em;
}

.main-footer .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    gap: 30px;
}

.footer-col {
    flex: 1;
    min-width: 200px;
    max-width: 280px;
}

.footer-col h3 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 1.3em;
    font-weight: 600;
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.8);
    transition: color var(--transition-speed) ease;
}

.footer-col ul li a:hover {
    color: var(--color-accent-primary);
}

.social-links {
    display: flex;
    flex-direction: column; /* Alignement vertical */
    gap: 10px; /* Espace réduit entre les éléments */
    align-items: flex-start;
}

.social-links a {
    color: #fff;
    font-size: 1em; /* Taille de police réduite */
    font-weight: 400; /* Poids de police réduit */
    transition: color var(--transition-speed) ease, transform var(--transition-speed) ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.social-links a:hover {
    color: var(--color-accent-primary);
    transform: translateX(5px);
}

/* Style d'icône Instagram "originale" */
/* Note : Font Awesome 6 utilise la classe 'fab' pour les marques */
.instagram-icon {
    position: relative;
    width: 1.5em; 
    height: 1.5em; 
    border: 2px solid currentColor;
    border-radius: 0.4em; 
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1em; /* Garde la taille d'icône relative à son parent */
    overflow: hidden;
}

/* Pastille Instagram */
.instagram-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150%; 
    height: 150%;
    background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
    border-radius: 0.5em; 
    transform: translate(-50%, -50%) scale(0.1); 
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    z-index: 1;
}

.social-links a:hover .instagram-icon::after {
    transform: translate(-50%, -50%) scale(1); 
    opacity: 1;
}

/* Icône biographie */
.footer-col ul li .fa-user-circle {
    margin-right: 8px;
    font-size: 1.1em;
    color: var(--color-accent-secondary);
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.7);
}

/* ---

### Responsive Design (Media Queries - Générales)

```css */
/* Tablette (portrait et petits ordinateurs portables) */
@media (max-width: 992px) {
    .main-nav ul li {
        margin-left: 20px;
    }
    /* Les styles spécifiques aux sections seront dans home.css */
}

/* Smartphones (portrait et paysage) */
@media (max-width: 768px) {
    .main-header .header-inner {
        flex-wrap: wrap;
        justify-content: space-between;
        padding-top: 10px;
        padding-bottom: 10px;
    }
    .site-logo {
        width: auto;
        text-align: left;
        margin-bottom: 0;
    }

    .main-nav {
        display: none; /* Caché par défaut sur mobile */
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 100%; /* Sous l'en-tête */
        left: 0;
        background-color: var(--color-background-header);
        box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        padding-bottom: 10px;
    }

    .main-nav.active {
        display: flex;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .main-nav ul li {
        margin: 10px 0;
        width: 100%;
        border-bottom: 1px solid #eee;
    }

    .main-nav ul li:last-child {
        border-bottom: none;
    }

    .main-nav ul li a {
        padding: 15px 20px;
        font-size: 1.1em;
        color: var(--color-dark-text);
    }
    .main-nav ul li a::after {
        left: 0;
        transform: none;
        background-color: var(--color-accent-primary);
    }
    .main-nav ul li a:hover::after {
        width: 100%;
    }

    .main-nav .submenu {
        position: static; /* Ne pas positionner absolument sur mobile */
        /*display: none; */ 
        /* Caché par défaut */
        box-shadow: none;
        background-color: #f5f5f5; /* Fond légèrement différent */
        padding: 0;
        border-radius: 0;
    }

    .main-nav .has-submenu.submenu-open > .submenu {
        display: flex; /* Affiché quand la classe 'submenu-open' est ajoutée */
        flex-direction: column;
    }

    .main-nav .submenu li {
    margin: 0; /* Réinitialise la marge des éléments de sous-menu */
}

    .main-nav .submenu li a {
        padding-left: 40px;
        font-size: 1em;
    }

    .main-nav .submenu li a:hover {
    background-color: #daeed5;
    color: var(--color-accent-primary);
    }

    /*.main-nav .has-submenu:hover > .submenu {
      display: block;
    }*/

    .menu-toggle {
        display: block;
        position: static;
        transform: none;
        color: #fff;
    }
    .main-header.sticky .menu-toggle {
        color: var(--color-dark-text);
    }

    .main-content {
        padding: 40px 0;
    }

    .footer-col {
        min-width: unset;
        margin-bottom: 30px;
    }

    .footer-col:last-child {
        margin-bottom: 0;
    }

    .footer-col ul {
        display: inline-block;
        text-align: left;
    }

    .social-links {
        justify-content: center;
        align-items: center;
    }
}

/* Très petits écrans */
@media (max-width: 480px) {
    .btn {
        padding: 12px 25px;
        font-size: 0.9em;
    }
}