:root {
    --primary: #1695a3;
    --primary-dark: #0e7a85;
    --primary-light: #1eb5c6;
    --secondary: #f8f9fa;
    --dark: #1a1a2e;
    --gray-100: #f3f4f6;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.15);
    --radius: 12px;
    --transition: all 0.3s ease;
}

/* Tipografia Geral */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--gray-600);
    background-color: var(--secondary);
}

/* Hero Section */
.about-hero {
    background: linear-gradient(rgba(22, 149, 163, 0.85), rgba(14, 122, 133, 0.85)),
                url('hero-bg.jpg') center/cover no-repeat;
    padding: 8rem 2rem;
    color: var(--white);
    text-align: center;
    position: relative;
}
.about-container {
    max-width: 900px;
    margin: 0 auto;
}
.about-hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 2rem;
    text-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Missão */
.mission-section {
    background: rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}
.mission-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--white);
    font-family: 'Playfair Display', serif;
}

/* Conteúdo */
.challenges-section,
.solutions-section {
    padding: 6rem 2rem;
}
.challenges-section {
    background-color: var(--white);
}
.solutions-section {
    background-color: var(--secondary);
}
.content-container {
    max-width: 1200px;
    margin: 0 auto;
}
.challenges-section h2,
.solutions-section h2 {
    font-family: 'Playfair Display', serif;
    color: var(--primary-dark);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 2rem;
    text-align: center;
}
.challenges-section p,
.solutions-section p {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray-600);
}

/* Grid de Soluções */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}
.solution-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    border: none;
}
.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}
.solution-card i {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    margin: 0 auto 1rem;
    transition: transform 0.3s;
}
.solution-card:hover i {
    transform: scale(1.1);
}
.solution-card h3 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}
.solution-card p {
    color: var(--gray-600);
    font-size: 1rem;
}

/* Mensagem Final */
.closing-message {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 6rem 2rem;
    text-align: center;
}
.closing-message p {
    font-size: 1.3rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
    font-weight: 500;
}

/* WhatsApp Flutuante */
.whatsapp-float {
    position: fixed;
    width: 55px;
    height: 55px;
    bottom: 25px;
    right: 25px;
    background-color: #25d366;
    color: white;
    border-radius: 50%;
    text-align: center;
    font-size: 28px;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}
.whatsapp-float:hover {
    transform: scale(1.1);
}

/* Responsividade */
@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2.2rem;
    }
    .mission-section h2,
    .challenges-section h2,
    .solutions-section h2 {
        font-size: 2rem;
    }
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    .solution-card {
        margin-bottom: 1.5rem;
    }
    .closing-message p {
        font-size: 1.1rem;
    }
}