* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* VARIABLES DE COULEURS */
:root {

    --blue-dark: #03274d;
    --blue-main: #0067c5;
    --blue-light: #6bb7ff;

    --text-dark: #222;
    --bg-light: #f5f7fa;

    --white: #ffffff;

    --shadow:
        0 6px 20px rgba(0,0,0,0.08);
}

body {
    font-family: Arial, sans-serif;
    color: white;
}

/* TOPBAR */

/* TOPBAR */

.topbar {
    background: var(--blue-dark);

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 10px 60px;
    font-size: 14px;
}

/* LIENS TOPBAR */

.topbar a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

.topbar a:hover {
    opacity: 0.8;
}

/* LOGO INSTA */

.logo_insta {
    display: flex;
    align-items: center;
    gap: 15px;

    text-decoration: none;
    color: var(--blue-main);
}

.logo_insta:hover {
    opacity: 0.9;
}

/* IMAGE */

.logo_insta img {
    height: 30px;
    width: auto;

    display: block;
}

/* LOGO GMAIL */

.logo_gmail {
    display: flex;
    align-items: center;
    gap: 15px;

    text-decoration: none;
    color: var(--blue-main);
}

.logo_gmail:hover {
    opacity: 0.9;
}

/* IMAGE */

.logo_gmail img {
    height: 25px;
    width: auto;

    display: block;
}


/* LOGO AERO */

.logo_aero {
    display: flex;
    align-items: center;
    gap: 15px;

    text-decoration: none;
    color: var(--blue-main);
}

.logo_aero:hover {
    opacity: 0.9;
}

/* IMAGE */

.logo_aero img {
    height: 35px;
    width: auto;

    display: block;
}

/* HEADER */

header {
    background: white;
    color: #03274d;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 60px;
    position:sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* LOGO */

.logo {
    display: flex;
    align-items: center;
    gap: 15px;

    text-decoration: none;
    color: var(--blue-main) ;
}

.logo:hover {
    opacity: 0.9;
}

/* IMAGE */

.logo img {
    height: 90px;
    width: auto;

    display: block;
}

/* TEXTE */

.logo-text {
    display: flex;
    flex-direction: column;

    font-size: 28px;
    font-weight: bold;
    letter-spacing: 1px;
}

.logo-text span {
    font-size: 15px;
    font-weight: normal;
    color: var(--text-dark);
    margin-top: 3px;
}

.logo span {
    font-size: 15px;
    font-weight: normal;
    color: #666;
    margin-top: 4px;
}

nav {
    display: flex;
    gap: 30px;
}

/* MENU */

nav a {

    text-decoration: none;
    color: var(--blue-dark);
    font-weight: 600;

    position: relative;
    padding-bottom: 6px;

    transition: 0.25s;
}

/* HOVER */

nav a:hover {
    color: var(--blue-main);
}

/* TRAIT ANIME */

nav a::after {

    content: "";

    position: absolute;
    left: 0;
    bottom: 0;

    width: 0;
    height: 2px;

    background: var(--blue-main);

    transition: 0.25s;
}

nav a:hover::after {
    width: 100%;
}

/* PAGE ACTIVE */

nav a.active {
    color: var(--blue-main);
}

nav a.active::after {
    width: 100%;
}



/* HERO */

.hero {
    position: relative;
    height: 92vh;
    min-height: 650px;

    background-image:
        url("images/hero.png");

        /* à modifier, c'est l'image de fond.*/

    background-size: cover;
    background-position: center;

    display: flex;
    align-items: center;
    padding-left: 80px;
}

.overlay {
    position: absolute;
    inset: 0;
    background:
    linear-gradient(
    rgba(3,39,77,0.55),
    rgba(0,0,0,0.45)
);
}

.hero-content {
    position: relative;
    max-width: 600px;
    z-index: 2;
    animation: fadeUp 1.5s ease;
}

.hero h1 {
    font-size: 82px;
    font-weight: 800;
    letter-spacing: 1px;
    text-shadow:
    0 4px 20px rgba(0,0,0,0.35);
    line-height: 0.95;
    margin-bottom: 25px;
}

.hero p {
    font-size: 22px;
    line-height: 1.5;
    margin-bottom: 35px;
}

/* ANIMATION HERO */

@keyframes fadeUp {

    from {
        opacity: 0;
        transform: translateY(50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* BOUTONS */

.buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
}

.primary {
    background: var(--blue-main);
    color: white;
}

.secondary {
    border: 2px solid white;
    color: white;
}

/* SECTION CLUB */

.club-section {
    background:var(--bg-light);
    color: var(--text-dark);
    display: flex;
    gap: 60px;
    align-items: center;
    padding: 80px;
}

.club-text {
    flex: 1;
}

.club-text h2 {
    color: var(--blue-main);
    font-size: 42px;
    margin-bottom: 25px;
}

.club-text p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 35px;
}

.club-image {
    flex: 1;
}

.club-image img {
    width: 100%;
    border-radius: 12px;
}

.blue {
    background: var(--blue-main);
    color: white;
}

/* ACTIVITIES */

.activities {
    background: white;
    color: #222;
    padding: 90px 80px;
    text-align: center;
}

.activities h2 {
    color: var(--blue-main);
    font-size: 42px;
    margin-bottom: 50px;
}

.cards {
    display: flex;
    gap: 30px;
    transition: 0.3s;
    justify-content: center;
}

.card {

    flex: 1;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;

    background: var(--bg-light);
    border-radius: 12px;
    padding: 35px;

    box-shadow: var(--shadow);
    transition: 0.3s;

    text-decoration: none;
    color: inherit;
    cursor: pointer;

    overflow: hidden;
}

.card h3 {
    color: var(--blue-main);
    margin-bottom: 15px;
    font-size: 24px;
    text-align: center;
}

.card p {
    line-height: 1.7;
    text-align: center;
    width: 100%;
}

.card:hover {

    transform: translateY(-8px);

    box-shadow:
        0 12px 30px rgba(0,0,0,0.12);

    background: white;
}

.card:hover h3 {
    color: var(--blue-main);
}


/* IMAGE CARDS */

.image-card {

    padding: 0;
    overflow: hidden;
    flex: 0 1 320px;
}

.image-card img {

    width: 100%;
    height: 260px;

    object-fit: cover;
    display: block;

    transition: 0.35s;
}

.image-card:hover img {

    transform: scale(1.05);
}


/* FOOTER */

footer {

    background: var(--blue-dark);
    color: white;

    padding-top: 60px;
}

/* CONTENU */

.footer-container {

    display: flex;
    justify-content: space-between;
    gap: 60px;

    padding: 0 80px 50px;
}

.footer-column {

    flex: 1;
    display: flex;
    flex-direction: column;
}

.footer-column h3 {

    margin-bottom: 20px;
    color: var(--blue-accent);
}

.footer-column p {

    line-height: 1.8;
}

.footer-column a {

    color: white;
    text-decoration: none;

    margin-bottom: 12px;

    transition: 0.25s;
}

.footer-column a:hover {

    color: var(--blue-accent);
}

/* BAS FOOTER */

.footer-bottom {

    border-top: 1px solid rgba(255,255,255,0.15);

    text-align: center;
    padding: 20px;

    font-size: 14px;
    color: rgba(255,255,255,0.75);
}

/* HAMBURGER */

.menu-toggle {

    display: none;

    background: none;
    border: none;

    font-size: 32px;
    color: #004b87;

    cursor: pointer;
}



/* CLUB PAGE */

.club-page {

    display: flex;
    gap: 60px;
    align-items: center;

    padding: 90px 80px;

    background: white;
    color: var(--text-dark);
}

.club-page-text {
    flex: 1;
}

.club-page-text h2 {

    color: var(--blue-main);
    font-size: 42px;
    margin-bottom: 25px;
}

.club-page-text p {

    line-height: 1.9;
    margin-bottom: 20px;
}

.club-page-text ul {

    list-style: disc;
    margin-left: 20px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.club-page-image {
    flex: 1;
}

.club-page-image img {

    width: 100%;
    border-radius: 14px;
    box-shadow: var(--shadow);
}




/* RESPONSIVE */

@media (max-width: 1020px) {

    .topbar {
        flex-direction: column;
        align-items: center;
        gap: 8px;
        padding: 12px 20px;
        text-align: center;
    }

    header {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }

nav {

        display: none;

        flex-direction: column;
        width: 100%;

        text-align: center;
        gap: 18px;

        padding-top: 10px;
    }

    nav.show {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    header {

        flex-direction: column;
        align-items: center;
    }

    .hero {
        padding: 40px 25px;
        height: 60vh;
        min-height: 500px;
    }

    .hero h1 {
        font-size: 48px;
    }

    .hero p {
        font-size: 18px;
    }

    .buttons {
        flex-direction: column;
        align-items: flex-start;
    }

    .club-section {
        flex-direction: column;
        padding: 50px 25px;
    }

    .club-text h2 {
        font-size: 34px;
    }

    .cards {
    flex-direction: column;
    }

    .footer-container {

    flex-direction: column;
    padding: 50px 25px;
    }

    .club-page {
    flex-direction: column;
    padding: 50px 25px;
}
}