/* =========================================
   G3 Labs - Premium Landing Page CSS
   ========================================= */

/* --- Variables (Design System) --- */
:root {
    /* Colors */
    --bg-primary: #08080c;
    --bg-secondary: #12121a;
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-glass-hover: rgba(255, 255, 255, 0.08);
    
    --accent-primary: #00f0ff; /* Electric Blue / Cyan */
    --accent-secondary: #8a2be2; /* Neon Violet */
    --accent-primary-dim: rgba(0, 240, 255, 0.2);
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --border-color: rgba(255, 255, 255, 0.08);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing & Layout */
    --container-width: 1200px;
    --section-pad-y: 100px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

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

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

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

ul {
    list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, .logo {
    font-family: var(--font-heading);
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 1.5rem; }
h3 { font-size: 1.5rem; font-weight: 600; margin-bottom: 1rem; }
h4 { font-size: 1.2rem; font-weight: 600; }

.gradient-text {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--accent-primary);
}

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

.section {
    padding: var(--section-pad-y) 0;
    position: relative;
}

.bg-alternate {
    background-color: var(--bg-secondary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 2rem;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

.btn-primary.glow {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #fff;
    box-shadow: 0 0 20px var(--accent-primary-dim);
}

.btn-primary.glow:hover {
    box-shadow: 0 0 30px rgba(138, 43, 226, 0.4), 0 0 15px rgba(0, 240, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-glass);
    border-color: var(--border-color);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--bg-glass-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* --- Navbar --- */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition-smooth);
}

#navbar.scrolled {
    padding: 1rem 0;
    background: rgba(8, 8, 12, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent-primary);
    transition: var(--transition-fast);
}

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

.mobile-menu-btn {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.mobile-menu-btn span {
    width: 30px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-fast);
}

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

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
    backdrop-filter: blur(5px);
}

.hero-title {
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

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

.hero-image-wrapper {
    position: relative;
}

.hero-image {
    width: 100%;
    border-radius: 20px;
    filter: drop-shadow(0 0 40px rgba(0, 240, 255, 0.15));
}

.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

.hero-glow-bg {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
    opacity: 0.15;
    filter: blur(100px);
    z-index: 1;
    pointer-events: none;
}

/* --- Services Section --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 3rem 2rem;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-primary-dim), transparent);
    opacity: 0;
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 240, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.service-card:hover::before {
    opacity: 1;
}

.card-icon-wrapper {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

.card-icon {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 10px rgba(138, 43, 226, 0.4));
}

.service-card h3 {
    position: relative;
    z-index: 2;
}

.service-card p {
    color: var(--text-secondary);
    position: relative;
    z-index: 2;
}

/* --- Differentials --- */
.differentials {
    position: relative;
    overflow: hidden;
}

.differentials-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.differentials-text h2 {
    margin-bottom: 1rem;
}

.differentials-text > p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 3rem;
}

.diff-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.diff-list li {
    display: flex;
    gap: 1.5rem;
}

.diff-bullet {
    width: 12px;
    height: 12px;
    background: var(--accent-primary);
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
    box-shadow: 0 0 15px var(--accent-primary);
}

.diff-info p {
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.diff-glow-bg {
    position: absolute;
    bottom: -200px;
    left: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
    opacity: 0.1;
    filter: blur(100px);
    z-index: 0;
    pointer-events: none;
}

/* --- Contact Section --- */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
}

.contact-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-top: 1rem;
}

.glass-panel {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 3rem;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.form-group {
    position: relative;
    margin-bottom: 2rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-fast);
    outline: none;
}

.form-group select {
    appearance: none;
    cursor: pointer;
    color: var(--text-secondary);
}

.form-group select option {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.form-group select:focus,
.form-group select:valid {
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-primary);
    background: rgba(0, 240, 255, 0.05);
}

.form-group label {
    position: absolute;
    left: 1.25rem;
    top: 1rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    pointer-events: none;
}

/* Floating Label Logic */
.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: -0.6rem;
    left: 1rem;
    font-size: 0.8rem;
    background: var(--bg-secondary);
    padding: 0 0.5rem;
    color: var(--accent-primary);
    border-radius: 4px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* --- Footer --- */
.footer {
    border-top: 1px solid var(--border-color);
    padding-top: 5rem;
    background-color: #050508;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1.5rem;
    max-width: 350px;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.link-group h4 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.link-group a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.link-group a:hover {
    color: var(--accent-primary);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* --- Animations (Scroll Reveal) --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 992px) {
    .hero-container, .contact-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-subtitle {
        margin: 0 auto 2.5rem;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .differentials-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(8, 8, 12, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        align-items: center;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.5);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-smooth);
        z-index: -1;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        z-index: 999;
    }

    .btn-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
        z-index: 1000;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .footer-container {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding-top: 120px;
    }
}