/* Variáveis de Cores - Paleta Tecnológica e Robusta */
:root {
    --primary: #0a0a0a; /* Preto Carbono */
    --secondary: #e63946; /* Vermelho Alerta / Performance */
    --accent: #1d3557; /* Azul Petróleo */
    --text: #d1d1d1;
    --white: #ffffff;
    --bg-tech: #111111;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    line-height: 1.6;
    background-color: var(--primary);
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 2px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul { list-style: none; }

img { max-width: 100%; display: block; }

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

.section { padding: 100px 0; }
.bg-tech { background-color: var(--bg-tech); }
.text-center { text-align: center; }
.mb-50 { margin-bottom: 50px; }

.subtitle {
    display: block;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.8rem;
    color: var(--secondary);
    font-weight: 700;
    margin-bottom: 10px;
}

/* Botões */
.btn {
    display: inline-block;
    background-color: var(--secondary);
    color: var(--white);
    padding: 15px 40px;
    border-radius: 4px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(230, 57, 70, 0.3);
}

.btn:hover {
    background-color: #c1121f;
    transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 25px 0;
    transition: var(--transition);
}

header.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    padding: 15px 0;
    border-bottom: 1px solid #222;
}

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

.logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.logo span { color: var(--secondary); }

.nav-links { display: flex; }
.nav-links li { margin-left: 35px; }
.nav-links a {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a:hover { color: var(--secondary); }

/* Hero */
.hero {
    height: 100vh;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    text-align: center;
}

.hero-content { width: 100%; }
.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: #aaa;
}

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

/* Safe List */
.safe-list li {
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    font-weight: 700;
    color: var(--white);
}

.safe-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
}

/* Safe Cards */
.safe-card {
    background: #1a1a1a;
    padding: 40px 30px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #333;
    transition: var(--transition);
}

.safe-card:hover {
    border-color: var(--secondary);
    transform: translateY(-10px);
}

.card-icon { font-size: 2.5rem; margin-bottom: 20px; }
.safe-card h3 { margin-bottom: 15px; font-size: 1.2rem; }
.safe-card p { font-size: 0.9rem; color: #888; margin-bottom: 25px; }
.link-tech { color: var(--secondary); font-weight: 700; font-size: 0.8rem; letter-spacing: 1px; }

/* Formulário */
.safe-form input, 
.safe-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 15px;
    border: 1px solid #333;
    background: #0a0a0a;
    color: var(--white);
    font-family: inherit;
    outline: none;
}

.safe-form input:focus { border-color: var(--secondary); }

/* Footer */
footer {
    background: #050505;
    color: #666;
    padding: 60px 0 20px;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid #111;
    padding-bottom: 30px;
    margin-bottom: 20px;
}

.footer-links a { margin-left: 25px; font-size: 0.8rem; }

.copyright { font-size: 0.75rem; }

/* Mobile Menu Icon */
.mobile-menu-icon { display: none; cursor: pointer; }
.mobile-menu-icon div {
    width: 25px;
    height: 2px;
    background-color: var(--white);
    margin: 7px;
    transition: var(--transition);
}

/* Responsividade */
@media (max-width: 992px) {
    .hero-content h1 { font-size: 2.5rem; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 50px; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        right: 0;
        top: 0;
        height: 100vh;
        width: 70%;
        background: var(--primary);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transform: translateX(100%);
        transition: transform 0.5s ease;
    }

    .nav-links li { margin: 20px 0; }
    .mobile-menu-icon { display: block; }
    .nav-active { transform: translateX(0); }
    .footer-grid { flex-direction: column; text-align: center; }
    .footer-links { margin-top: 20px; }
}