.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: var(--white);
    padding: 3rem 2rem 0;
    text-align: center;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.hero h1 span {
    color: var(--accent-green);
}

.hero p {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.hero > img {
    max-width: 90%;
    max-height: 250px;
    margin-top: 2rem;
}

.btn-primary {
    display: inline-block;
    background-color: #4ADE80;
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    display: block;
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 0.6rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
}

.categories {
    background-color: var(--white);
    padding: 3.5rem 1.5rem;
    text-align: center;
}

.categories h2 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 2rem;
}

.categories-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    max-width: 1200px;
    margin: 0 auto;
    justify-content: center;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex: 1 1 calc(16.66% - 1.25rem);
    max-width: 160px;
    min-width: 140px;
    height: 110px;
    padding: 1.1rem;
    border-radius: 12px;
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.category-card svg {
    width: 32px;
    height: 32px;
}

.category-card span {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-color);
}
.category-card.science { background-color: #FFEDD5; }    /* orange pêche */
.category-card.maths { background-color: #BFDBFE; }      /* bleu clair */
.category-card.francais { background-color: #FECDD3; }   /* rose pêche */
.category-card.histoire { background-color: #FEF3C7; }   /* jaune beige */
.category-card.info { background-color: #DDD6FE; }       /* violet lavande */
.category-card.langues { background-color: #A7F3D0; }    /* vert menthe */

.courses {
    background-color: var(--color-bg);
    padding: 3.5rem 1.5rem;
    text-align: center;
}

.courses h2 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 2rem;
}

.courses-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.course-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    width: 100%;
    text-align: left;
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-4px);
}

.course-card .course-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.course-card .course-content {
    padding: 1rem;
}

.course-card h3 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.course-card .author {
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

.course-card .rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.course-card .stars {
    color: #FBBF24;
    font-size: 0.95rem;
}

.course-card .reviews {
    font-size: 0.85rem;
    color: var(--text-color);
    opacity: 0.6;
}

/* --- POURQUOI WETEACHUP --- */
.why-us {
    background-color: var(--white);
    padding: 3.5rem 1.5rem;
    text-align: center;
}

.why-us h2 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (min-width: 768px) {
    .hero > img {
        max-height: 400px;
    }
}

@media (min-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
}
@media (min-width: 640px) {
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .courses-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (min-width: 600px) {
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .categories-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.feature {
    max-width: 280px;
    margin: 0 auto;
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
}

.feature h3 {
    font-size: 1.05rem;
    color: var(--text-color);
    margin-bottom: 0.4rem;
}

.feature p {
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.7;
    line-height: 1.4;
}
@media (max-width: 600px) {
    .category-card {
        flex: 1 1 calc(50% - 1.25rem);
        max-width: none;
    }
}