/* 
  Exatec Assessoria e Serviços - Design System
  Colors:
  Background: #0A0A0A
  Surface: #121212
  Card: #1B1B1B
  Border: #2B2B2B
  Primary Red Accent: #8B0000
  Hover Red: #B22222
  Text: #F1F1F1
  Muted: #B3B3B3
*/

:root {
    --bg: #0A0A0A;
    --surface: #121212;
    --card: #1B1B1B;
    --border: #2B2B2B;
    --primary: #8B0000;
    --primary-hover: #B22222;
    --text: #F1F1F1;
    --text-muted: #B3B3B3;
    --font-main: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.2;
}

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

button {
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
    font-family: inherit;
}

ul {
    list-style: none;
}

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

/* Layout Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
}

/* Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(139, 0, 0, 0.3);
}

.btn-outline {
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.card {
    background-color: var(--card);
    border: 1px solid var(--border);
    padding: 2rem;
    border-radius: 8px;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    height: 80px;
    display: flex;
    align-items: center;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link:hover {
    color: var(--primary);
}

.lang-toggle {
    display: flex;
    gap: 0.5rem;
    background: var(--surface);
    padding: 4px;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.lang-btn {
    padding: 4px 8px;
    font-size: 0.75rem;
    border-radius: 2px;
}

.lang-btn.active {
    background-color: var(--primary);
    color: #fff;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--surface);
    border-top: 1px solid var(--border);
    padding: 1.5rem;
    z-index: 2000;
    display: none;
    transform: translateY(100%);
    transition: var(--transition);
}

.cookie-banner.active {
    display: block;
    transform: translateY(0);
}

/* WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: #25D366;
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    z-index: 1500;
    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

/* Mobile Menu */
.mobile-toggle {
    display: none;
    font-size: 1.5rem;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .mobile-toggle {
        display: block;
    }
    .section {
        padding: 3rem 0;
    }
}

/* Utilities */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}