:root {
    /* Colors - Enterprise Dark Theme */
    --bg-primary: #050505;
    --bg-secondary: #0d0d0d;
    --bg-tertiary: #151515;
    
    --brand-primary: #ff1f1f;
    --brand-secondary: #cc0000;
    --brand-accent: rgba(255, 31, 31, 0.1);
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 31, 31, 0.3);
    
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.05);
    
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --container-max: 1200px;
    --header-height: 80px;
    --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-primary);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* Typography */
h1, h2, h3, h4, h5 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: linear-gradient(135deg, #fff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-red {
    color: var(--brand-primary);
}

/* Layout Components */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 100px 0;
}

/* Header & Nav */
header {
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--brand-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(255, 31, 31, 0.4);
}

nav ul {
    display: flex;
    gap: 32px;
}

nav ul li a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

nav ul li a:hover {
    color: var(--brand-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background: var(--brand-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 31, 31, 0.3);
}

.btn-outline {
    border-color: var(--border-color);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

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

/* Hero Section */
.hero {
    padding-top: 180px;
    padding-bottom: 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 31, 31, 0.1) 0%, transparent 70%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 24px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Cards & Grids */
.grid {
    display: grid;
    gap: 24px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

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

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--brand-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--brand-primary);
    font-size: 1.5rem;
}

/* Code Blocks */
.code-window {
    background: #000;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    margin-top: 60px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
}

.code-header {
    background: #111;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.code-content {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: #d1d1d1;
    line-height: 1.7;
}

.code-content .keyword { color: #ff7b72; }
.code-content .string { color: #a5d6ff; }
.code-content .function { color: #d2a8ff; }

/* Footer */
footer {
    padding: 80px 0 40px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col h4 {
    margin-bottom: 24px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-secondary);
}

.footer-col ul li a:hover {
    color: var(--brand-primary);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsividade */
@media (max-width: 992px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 3.5rem; }
}

@media (max-width: 768px) {
    .grid-3, .grid-2 { grid-template-columns: 1fr; }
    nav { display: none; }
    .hero h1 { font-size: 2.5rem; }
    .footer-grid { grid-template-columns: 1fr; }
}