/* ==========================================================================
   NetSecBR - Estilos Globais
   ========================================================================== */

:root {
    /* Paleta de Cores */
    --color-primary: #0A192F; /* Azul Escuro */
    --color-secondary: #0070F3; /* Azul Tecnológico */
    --color-white: #FFFFFF;
    --color-light-gray: #F5F5F7;
    --color-gray: #8892B0;
    --color-dark-gray: #1D1D1F;
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Transições */
    --transition-fast: 0.2s ease;
}

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

body {
    font-family: var(--font-primary);
    color: var(--color-dark-gray);
    background-color: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Tipografia
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    color: var(--color-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.75rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
    font-size: 1.125rem;
}

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

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

/* ==========================================================================
   Layout & Componentes
   ========================================================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-light {
    background-color: var(--color-light-gray);
}

.section-dark {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.section-dark h2, 
.section-dark h3, 
.section-dark p {
    color: var(--color-white);
}

.section-dark p {
    opacity: 0.8;
}

/* Botões */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: 4px;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 112, 243, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
}

.btn-outline:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

/* ==========================================================================
   Navegação
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: var(--spacing-sm) 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
}

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

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-links a {
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-primary);
    padding: 0.5rem;
    z-index: 1001;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-col h4 {
    color: var(--color-white);
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: rgba(255,255,255,0.8);
}

.footer-col a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    opacity: 0.8;
}

.plus {
    color: var(--color-secondary);
}

/* Botão Flutuante WhatsApp */
.whatsapp-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
    z-index: 999;
    text-decoration: none;
}

.whatsapp-button:hover {
    background-color: #20BA5A;
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.6);
}

@media (max-width: 768px) {
    .whatsapp-button {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        bottom: 15px;
        right: 15px;
    }
}

/* ==========================================================================
   Responsive Design - Tablet (768px e abaixo)
   ========================================================================== */

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    p { font-size: 1rem; }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        list-style: none;
        padding: 0;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    
    .nav-links.active {
        max-height: 400px;
        padding: 1rem 0;
    }
    
    .nav-links li {
        padding: 0.75rem 1rem;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    
    .nav-links a {
        display: block;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-xs) 0;
    }
    
    .logo img {
        height: 50px !important;
    }
    
    body {
        padding-top: 80px;
    }
}

/* ==========================================================================
   Responsive Design - Mobile (480px e abaixo)
   ========================================================================== */

@media (max-width: 480px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.25rem; }
    h3 { font-size: 1rem; }
    p { font-size: 0.95rem; }
    
    .section {
        padding: var(--spacing-md) 0;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    .logo img {
        height: 40px !important;
    }
}