/* 
  Lk Security - Premium Cyber Security Theme 
*/

:root {
    /* Color Palette */
    --bg-dark: #050a10;
    --bg-darker: #020508;
    --bg-card: rgba(13, 22, 35, 0.6);
    
    --primary: #00ff88; /* Neon Green for positive security feel */
    --primary-glow: rgba(0, 255, 136, 0.3);
    
    --secondary: #00b8ff; /* Cyber Blue */
    --secondary-glow: rgba(0, 184, 255, 0.3);
    
    --text-main: #f0f4f8;
    --text-muted: #94a3b8;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(0, 255, 136, 0.2);

    /* Typography */
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Space Grotesk', sans-serif;
    
    /* Spacing */
    --section-padding: 6rem 0;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* Background Effects */
.glow-background {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, var(--primary-glow) 0%, transparent 20%),
                radial-gradient(circle at 80% 20%, var(--secondary-glow) 0%, transparent 20%);
    z-index: -2;
    opacity: 0.5;
    pointer-events: none;
    animation: drift 20s linear infinite alternate;
}

.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
    pointer-events: none;
}

@keyframes drift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-5%, -5%); }
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--text-main), var(--text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Glassmorphism Utility */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--primary);
    color: var(--bg-darker);
    box-shadow: 0 0 20px var(--primary-glow);
}

.btn-primary:hover {
    background: #00d672;
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--primary-glow);
}

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 255, 136, 0.05);
}

.btn-block {
    width: 100%;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: all var(--transition-normal);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(2, 5, 8, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-main);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.site-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-main);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; /* Space for navbar */
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 184, 255, 0.1);
    color: var(--secondary);
    border: 1px solid rgba(0, 184, 255, 0.2);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

/* Hero Visual Animation */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.shield-graphic {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.center-icon {
    font-size: 6rem;
    color: var(--primary);
    z-index: 10;
    filter: drop-shadow(0 0 20px var(--primary-glow));
    max-width: 140px;
    height: auto;
    object-fit: contain;
}

.ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

.ring-1 {
    width: 150px;
    height: 150px;
    border-top-color: var(--primary);
    animation: spin 8s linear infinite;
}

.ring-2 {
    width: 220px;
    height: 220px;
    border-right-color: var(--secondary);
    animation: spin 12s linear infinite reverse;
}

.ring-3 {
    width: 300px;
    height: 300px;
    border-bottom-color: var(--primary);
    border-left-color: var(--secondary);
    animation: spin 20s linear infinite;
    opacity: 0.5;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Soluções (Firewall) */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    text-align: left;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

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

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    display: inline-block;
    padding: 1rem;
    background: rgba(0, 255, 136, 0.1);
    border-radius: 12px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

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

/* Serviços */
.services-wrapper {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.service-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.service-row.reverse .service-info {
    order: 2;
}
.service-row.reverse .service-visual {
    order: 1;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 33px;
    height: 33px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--bg-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 0 15px var(--primary-glow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-hover);
    transform: translateY(-5px);
    box-shadow: 0 0 25px var(--primary-glow);
}

.service-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--secondary);
}

.service-info p {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.service-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 10rem;
    color: rgba(255, 255, 255, 0.03);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    height: 300px;
    position: relative;
    overflow: hidden;
}

.service-visual::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, transparent, rgba(0, 184, 255, 0.05));
}

/* Clientes & Parceiros */
.logo-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
    align-items: center;
}

.logo-item {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem 2.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-width: 180px;
    height: 110px;
    transition: all var(--transition-normal);
    filter: grayscale(100%) opacity(0.8);
}

.logo-item:hover {
    filter: grayscale(0%) opacity(1);
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 5px 20px rgba(0, 255, 136, 0.1);
}

.logo-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* Contato */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.contact-list {
    list-style: none;
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 1rem;
    line-height: 1.5;
}

.contact-text strong {
    color: var(--text-main);
    font-size: 1.1rem;
    font-weight: 700;
}

.contact-text {
    color: var(--text-muted);
}

.contact-list i {
    color: var(--primary);
    font-size: 1.5rem;
    margin-top: 0.15rem;
}

.contact-form-wrapper {
    padding: 2.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    font-family: var(--font-sans);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    background: var(--bg-darker);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-logo p {
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.footer-copy {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.visible {
    opacity: 1;
    transform: translate(0);
}

/* Responsive */
@media (max-width: 992px) {
    .hero-container,
    .service-row,
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }

    .hero-visual {
        order: -1;
    }

    .service-row.reverse .service-info,
    .service-row .service-info {
        order: 1;
    }
    
    .service-row.reverse .service-visual,
    .service-row .service-visual {
        order: 2;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-dark);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: left var(--transition-normal);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        text-align: center;
        gap: 2.5rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .section {
        padding: 4rem 0;
    }
}