:root {
    --primary: #1C262A;
    --primary-dark: #0f171a;
    --primary-light: #314148;
    --accent: #3E7CFF;
    --accent-hover: #2a5fd9;
    --whatsapp: #25d366;
    --whatsapp-hover: #1da851;
    --text: #1f2937;
    --text-light: #6b7280;
    --bg: #ffffff;
    --bg-alt: #f3f4f6;
    --border: #d1d5db;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
header {
    background: #f0f2f4;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 3px solid var(--primary);
}

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

.logo {
    height: 38px;
    width: auto;
}

.header-info {
    display: flex;
    align-items: center;
    gap: 24px;
}

.header-info .phone {
    color: var(--primary);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Hero */
.hero {
    background: var(--primary-light);
    color: #fff;
    padding: 60px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: clamp(1.75rem, 5vw, 2.75rem);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 32px;
}

.tagline strong {
    color: var(--accent);
    font-weight: 600;
}

/* WhatsApp Button */
.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--whatsapp);
    color: #fff;
    padding: 14px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: background 0.2s, transform 0.2s;
}

.btn-whatsapp:hover {
    background: var(--whatsapp-hover);
    transform: translateY(-2px);
}

.btn-whatsapp-lg {
    padding: 16px 36px;
    font-size: 1.125rem;
}

/* Sections */
section {
    padding: 64px 0;
}

section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--primary);
    text-align: center;
}

section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin: 12px auto 0;
}

/* Serviços */
.servicos {
    background: var(--bg-alt);
}

.servicos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.servico-card {
    background: var(--bg);
    padding: 28px;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: box-shadow 0.2s, transform 0.2s;
}

.servico-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    transform: translateY(-4px);
}

.servico-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 12px;
}

.servico-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Sobre */
.sobre {
    text-align: center;
}

.sobre p {
    max-width: 700px;
    margin: 0 auto 16px;
    color: var(--text-light);
    font-size: 1.1rem;
}

.sobre p:last-of-type {
    margin-bottom: 0;
}

/* Contato */
.contato {
    background: var(--bg-alt);
    text-align: center;
}

.contato-info {
    margin-bottom: 32px;
}

.contato-info p {
    margin-bottom: 8px;
    font-size: 1.05rem;
}

/* Footer */
footer {
    background: var(--primary);
    color: rgba(255,255,255,0.7);
    padding: 24px 0;
    text-align: center;
    font-size: 0.875rem;
}

/* WhatsApp Float */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--whatsapp);
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
    z-index: 1000;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }
    
    section {
        padding: 48px 0;
    }
    
    .servicos-grid {
        grid-template-columns: 1fr;
    }
    
    .logo {
        height: 32px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 12px;
    }
    
    .header-info .phone {
        font-size: 1rem;
    }
    
    .whatsapp-float {
        bottom: 16px;
        right: 16px;
        width: 56px;
        height: 56px;
    }
}