@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&family=Inter:wght@400;700&display=swap');

:root {
    --primary-color: #007BFF;
    --secondary-color: #8A2BE2;
    --background-color: #FFFFFF;
    --surface-color: #F5F5F5;
    --text-color: #333;
    --light-text-color: #666;
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.8;
    font-size: 18px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: var(--background-color);
    padding: 20px 0;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-primary);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: var(--light-text-color);
    font-weight: 600;
    transition: color 0.3s ease;
}

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

main {
    padding-top: 60px;
}

section {
    padding: 80px 0;
}

.hero {
    text-align: center;
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(240, 248, 255, 0.5), rgba(230, 230, 250, 0.5));
}

.hero h1 {
    font-family: var(--font-primary);
    font-size: 4rem;
    font-weight: 700;
    color: #222;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: var(--light-text-color);
}

#o-que-e, #causas, #ajuda {
    background-color: var(--background-color);
}

h2 {
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 40px;
    text-align: center;
}

#sintomas {
    background-color: var(--surface-color);
}

.symptom-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.card {
    background-color: var(--background-color);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 123, 255, 0.1);
}

.card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

.card h3 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    margin-bottom: 10px;
}

#causas ul {
    list-style: none;
    padding-left: 0;
}

#causas li {
    background-color: var(--surface-color);
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

footer {
    background-color: #222;
    color: #ccc;
    text-align: center;
    padding: 40px 0;
    font-size: 0.9rem;
}

footer p {
    margin-bottom: 10px;
}

footer a {
    color: #fff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    body {
        font-size: 16px;
    }

    nav ul {
        display: none; /* Simple responsive menu, can be improved with JS */
    }

    .hero h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2.5rem;
    }
}