:root {
    --primary: #7c3aed;
    --primary-dark: #5b21b6;
    --secondary: #f0abfc;
    --accent: #f59e0b;
}

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

body {
    font-family: 'Poppins', sans-serif;
    overflow-x: hidden;
    color: #333;
}

h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
}

.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    overflow: hidden;
}

.number {
    position: absolute;
    color: rgba(255, 255, 255, 0.05);
    font-size: 1.5rem;
    font-weight: 300;
    user-select: none;
    animation: float 15s infinite linear;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
    }
}

.section-title {
    position: relative;
    padding-bottom: 10px;
    margin-bottom: 30px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(124, 58, 237, 0.2);
}

.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.nav-active {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
{{ ... }}
    opacity: 0.9;
}

/* =============================================
 * 3.2 Footer - Responsividade
 * ============================================= */
@media (min-width: 640px) {
    .footer-links-section {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .footer-about {
        grid-column: span 6;
        padding-right: 2rem;
        border-bottom: none;
        border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .footer-links-section {
        grid-column: span 6;
        grid-template-columns: repeat(2, 1fr);
        padding: 0 2rem;
        border-bottom: none;
        border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .footer-contact {
        grid-column: 1 / -1;
        padding-top: 3rem;
    }
    
    .contact-info {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-about {
        grid-column: span 4;
        padding-right: 3rem;
    }
    
    .footer-links-section {
        grid-column: span 5;
        padding: 0 3rem;
    }
    
    .footer-contact {
        grid-column: span 3;
        padding: 0 0 0 3rem;
        border-left: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1280px) {
    .footer-container {
        padding: 0 2rem;
    }
    
    .footer-about {
        padding-right: 4rem;
    }
    
    .footer-links-section {
        padding: 0 4rem;
    }
    
    .footer-contact {
        padding-left: 4rem;
    }
}

/* Botão Voltar ao Topo */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Botão do WhatsApp */
#whatsapp-button {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 999;
}

#whatsapp {
    font-size: 3.5rem;
    color: #25D366;
    background: white;
    border-radius: 50%;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

#whatsapp:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* =============================================
 * 4. Responsividade
 * ============================================= */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 2.5rem;
    }
    
    .footer-about,
    .footer-links,
    .footer-contact {
        width: 100%;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    #whatsapp {
        width: 60px;
        height: 60px;
        font-size: 2.5rem;
    }
}

/* =============================================
 * 5. Animações
 * ============================================= */
@keyframes float {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0);
    }
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-delay-1 {
    animation-delay: 0.2s;
}

.animate-delay-2 {
    animation-delay: 0.4s;
}

.animate-delay-3 {
    animation-delay: 0.6s;
}

.floating-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 100;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #25D366;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 5px 15px rgba(37, 211, 102, 0.3);
    transition: all 0.3s ease;
}

.floating-button:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4);
}