body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}


/* ────────────────────────────────
 * 🎉 SECTION PAGE BOUTON
 *──────────────────────────────── */

/* 🖼️ Fond et structure générale */
#accueil-btn {
    background: url('../images/background.png') no-repeat center center/cover;
    background-attachment: fixed;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: 24px;
    padding-right: 20px;
    padding-bottom: 120px;
    padding-left: 20px;
    position: relative;
}

#accueil-btn::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.46);
    pointer-events: none;
    z-index: 0;
}

#accueil-btn .container {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
}

.content-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.btn-menu {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 200px;
    gap: 8px;
    margin-top: 13px;
    padding: 10px 50px;
    font-size: 1rem;
    font-weight: 600;
    color: white !important;
    border-radius: 30px;
    text-decoration: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition:
        background-color 0.3s ease,
        transform 0.2s cubic-bezier(.4, 0, .2, 1),
        box-shadow 0.3s cubic-bezier(.4, 0, .2, 1),
        letter-spacing 0.3s cubic-bezier(.4, 0, .2, 1),
        filter 0.3s cubic-bezier(.4, 0, .2, 1);
    letter-spacing: 0;
    position: relative;
    overflow: hidden;
}

.btn-menu::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.18);
    border-radius: 100%;
    transform: translate(-50%, -50%);
    transition: width 0.4s cubic-bezier(.4, 0, .2, 1), height 0.4s cubic-bezier(.4, 0, .2, 1);
    z-index: 0;
    pointer-events: none;
}

.btn-menu:hover {
    background-color: var(--primary-color-hover);
    transform: translateY(-5px) scale(1.06) rotate(-1deg);
    box-shadow: 0 8px 24px rgba(40, 90, 235, 0.18);
    letter-spacing: 2px;
    filter: brightness(1.08) saturate(1.2);
}

.btn-menu:hover::after {
    width: 300px;
    height: 300px;
}

.btn-menu span {
    flex: 1;
    text-align: left;
}

.btn-menu img,
.btn-menu i {
    flex-shrink: 0;
}

.btn-instagram {
    background: radial-gradient(circle at 30% 110%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
    color: #fff;
    transition: transform 0.35s cubic-bezier(.4, 0, .2, 1), box-shadow 0.35s cubic-bezier(.4, 0, .2, 1), filter 0.35s cubic-bezier(.4, 0, .2, 1);
}