/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color-dark) 100%);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color-light), var(--primary-color), var(--primary-color-dark));
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Main Content */
.main-content {
    padding: 80px 0;
    background-color: var(--white);
}

/* Intro Section */
.intro-section {
    max-width: 800px;
    margin: 0 auto 60px;
    text-align: center;
}

.intro-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: bold;
}

.intro-section .lead {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.intro-section p {
    color: var(--text-primary);
    line-height: 1.6;
}

/* Diseases Section */
.diseases-section {
    margin-bottom: 80px;
}

.diseases-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
    font-weight: bold;
}

.section-description {
    text-align: center;
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.diseases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 2rem;
}

.disease-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.3s ease;
}

.disease-card:hover {
    transform: translateY(-5px);
}

.disease-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.disease-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.disease-card h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.disease-card p {
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
}

/* Info Section */
.info-section {
    background: var(--gray-50);
    padding: 60px 0;
    margin: 0 -15px;
}

.info-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    font-weight: bold;
}

.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.info-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.info-card h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.info-card p {
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .main-content {
        padding: 60px 0;
    }

    .intro-section h2,
    .diseases-section h2,
    .info-section h2 {
        font-size: 2rem;
    }

    .intro-section .lead {
        font-size: 1.1rem;
    }

    .disease-card,
    .info-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 0;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .main-content {
        padding: 40px 0;
    }

    .intro-section .lead {
        font-size: 1rem;
    }

    .disease-card,
    .info-card {
        padding: 1.2rem;
    }

    .disease-icon {
        width: 50px;
        height: 50px;
    }

    .disease-icon i {
        font-size: 1.5rem;
    }
}