/* === STYLE GLOBAL === */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-image: url("/static/images/background.jpg");
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
}

/* === NAVIGATION === */
nav.nav-principale {
    position: relative;
    z-index: 1000;
    background-color: rgba(255,255,255,0.50);
    padding: 10px 0;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

nav.nav-principale .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 20px;
}

nav.nav-principale .bloc {
    background-color: #3498db;
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.2s, background-color 0.3s;
    display: inline-block;
    text-align: center;
}

nav.nav-principale .bloc:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

/* === RESPONSIVE MENU : 2 COLONNES SUR MOBILE === */
@media (max-width: 768px) {
    nav.nav-principale .container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding: 10px;
    }

    nav.nav-principale .bloc {
        font-size: 0.95rem;
        padding: 10px;
        width: 100%;
    }

    nav.nav-principale .bloc:nth-child(odd):last-child {
        grid-column: span 2;
        justify-self: center;
        width: 60%;
    }
}

/* === HERO SECTION === */
.hero {
    height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
    background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4));
    padding: 20px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.4rem;
}

/* === CONTAINER === */
.container {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 20px;
    margin: 30px auto;
    max-width: 1000px;
    box-shadow: 0 0 20px rgba(0,0,0,0.2);
}

.home-page .container {
    background: none;
    padding: 0;
    margin: 0;
    box-shadow: none;
    max-width: 100%;
}

/* === BLOCS COURS === */
#cours {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 50px;
    max-width: 660px;
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.bloc {
    background-color: #3498db;
    padding: 20px 30px;
    border-radius: 12px;
    font-weight: bold;
    text-align: center;
    color: white;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.bloc:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

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

.bloc a:hover {
    color: #f1c40f;
}

/* === TÉMOIGNAGES === */
.container.temoignage {
    padding: 30px;
    max-width: 900px;
}

/* === PAGE À PROPOS === */
.about-page {
    max-width: 900px;
    margin: auto;
    padding: 40px;
}

.about-page .titre-principal {
    text-align: center;
    color: #2c3e50;
}

.about-page .logo {
    display: block;
    margin: 20px auto;
    max-width: 200px;
}

.about-page .intro {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.about-page .sous-titre {
    margin-top: 30px;
    margin-bottom: 10px;
}

.about-page .sous-titre.bleu { color: #2980b9; }
.about-page .sous-titre.vert { color: #27ae60; }
.about-page .sous-titre.violet { color: #8e44ad; }
.about-page .sous-titre.rouge { color: #c0392b; }

.about-page .image-projet {
    width: 100%;
    border-radius: 10px;
    margin: 30px 0;
}

.about-page .video {
    text-align: center;
    margin: 30px 0;
}

.about-page .citation {
    font-style: italic;
    margin-top: 10px;
}