/* --- HERO --- */
.page-header {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(to bottom, #000, var(--bg-dark));
}
.page-header h1 { font-size: 3rem; margin-bottom: 10px; color: white; text-transform: uppercase; }
.page-header span { color: var(--primary-yellow); }
.page-header p { color: #888; max-width: 700px; margin: 0 auto; }

/* --- GRID LAYOUT --- */
.activities-container {
    padding: 40px 5% 80px;
    max-width: 1400px;
    margin: 0 auto;
}

/* --- SECTION BLOCKS --- */
.activity-block {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 80px;
    align-items: center;
    gap: 50px;
}

.activity-block.reverse {
    flex-direction: row-reverse;
}

.act-image {
    flex: 1;
    min-width: 300px;
    height: 400px;
    background-size: cover;
    background-position: center;
    border-radius: 8px;
    border: 1px solid #333;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    position: relative;
}

/* Effet visuel sur l'image */
.act-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, rgba(255,215,0,0.1), transparent);
}

.act-content {
    flex: 1;
    min-width: 300px;
}

.act-icon {
    font-size: 2.5rem;
    color: var(--primary-yellow);
    margin-bottom: 20px;
    display: inline-block;
}

.act-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    line-height: 1.1;
}

.act-desc {
    color: #ccc;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    background: #222;
    color: white;
    padding: 8px 15px;
    border-radius: 50px;
    font-size: 0.9rem;
    border: 1px solid #444;
}

/* --- SPECIFIC APP SECTION --- */
.app-section {
    background: var(--bg-card);
    padding: 60px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #333;
}

.app-btn {
    display: inline-block;
    background: white;
    color: black;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: bold;
    margin-top: 20px;
    text-transform: uppercase;
}
.app-btn:hover { background: var(--primary-yellow); }

.app-image {
    display: block;
    max-width: 260px;
    width: 100%;
    height: auto;
    margin: 20px auto 0;
}

/* Placeholder images colors */
.img-muscu { background-image: url('../img/home_cardio.png'); background-color: #222; }
.img-cours { background-image: url('../img/cours_collectifs.png'); background-color: #333; }
.img-cross { background-image: url('../img/cross_training.png'); background-color: #444; }
.img-aqua { background-image: url('../img/aquagym.png'); background-color: #004466; }

@media (max-width: 768px) {
    .activity-block { flex-direction: column !important; }
    .act-image { width: 100%; height: 250px; }
    .page-header h1 { font-size: 2.2rem; }
}