:root {
    --bg-deep: #0a0a0a;
    --bg-surface: #141416;
    --accent: #00f2ff;
    --accent-glow: rgba(0, 242, 255, 0.3);
    --sig-green: #00d15f;
    --sig-green-glow: rgba(0, 209, 95, 0.3);
    --text-main: #f5f5f7;
    --text-muted: #8e9aaf;
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

img {
    max-width: 100%;
    height: auto;
}

body {
    background-color: var(--bg-deep);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-family: 'Outfit', sans-serif;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

/* Typography */
h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.accent {
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent-glow);
}

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

.tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--accent);
    color: var(--bg-deep) !important; /* Force black text */
    text-decoration: none;
    font-weight: 700;
    border-radius: 8px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--accent-glow);
}

.btn-outline {
    display: inline-block;
    padding: 1rem 2rem;
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    text-decoration: none;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
}

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

/* Nav */
nav {
    padding: 0.8rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.05em;
}

.logo-img {
    height: 120px;
    width: auto;
    object-fit: contain;
}

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

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Hero */
.hero {
    padding: 12rem 0 8rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-logo {
    height: 480px;
    width: auto;
    margin-bottom: 2rem;
    filter: drop-shadow(0 0 30px var(--accent-glow));
    transition: var(--transition);
}

.hero-logo:hover {
    transform: scale(1.02);
    filter: drop-shadow(0 0 50px var(--accent-glow));
}

.hero-tagline {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--sig-green);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
    text-shadow: 0 0 15px var(--sig-green-glow);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.hero-background {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 20%, var(--accent-glow) 0%, transparent 40%);
    opacity: 0.5;
    z-index: 1;
}

/* Services */
.services {
    padding: 8rem 0;
    background: var(--bg-surface);
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 3rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--accent);
    transform: translateY(-10px);
}

.service-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-card p {
    color: var(--text-muted);
}

/* Architecture */
.architecture-focus {
    padding: 10rem 0;
}

.feature-list {
    list-style: none;
    margin-top: 2rem;
}

.feature-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-muted);
}

.feature-list li::before {
    content: "→";
    color: var(--accent);
    font-weight: 800;
}

.glass-box {
    padding: 3rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 32px;
    backdrop-filter: blur(20px);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5);
}

.code-snippet {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.code-snippet code {
    display: block;
    margin-bottom: 0.5rem;
}

/* CTA */
.cta-card {
    padding: 5rem;
    background: linear-gradient(135deg, var(--bg-surface) 0%, #1a1a1c 100%);
    border-radius: 32px;
    text-align: center;
    border: 1px solid var(--glass-border);
}

.cta-card h2 {
    margin-bottom: 1.5rem;
}

.cta-card p {
    max-width: 600px;
    margin: 0 auto 2.5rem;
    color: var(--text-muted);
    font-size: 1.1rem;
}

.btn-white {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--text-main);
    color: var(--bg-deep);
    text-decoration: none;
    font-weight: 700;
    border-radius: 8px;
    transition: var(--transition);
}

.btn-white:hover {
    transform: scale(1.05);
}

/* Contact */
.contact {
    padding: 10rem 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 1.2rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-main);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--glass-border);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 1s ease forwards;
}

.fade-in-delayed {
    opacity: 0;
    animation: fadeIn 1s ease 0.3s forwards;
}

/* Responsive */
@media (max-width: 992px) {
    body {
        overflow-x: hidden;
    }

    h1 { 
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .grid-2, .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero { 
        padding: 10rem 0 3rem; /* Increased top padding to avoid header overlap */
        text-align: center;
    }

    .hero-logo {
        width: 100% !important;
        max-width: 280px !important; /* Hard limit for mobile */
        height: auto !important;
        margin: 0 auto 1.5rem;
    }

    .hero-tagline {
        font-size: 0.8rem;
        letter-spacing: 0.1em;
        margin-bottom: 1rem;
        padding: 0 1rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        padding: 0 1rem;
    }

    nav {
        padding: 0.5rem 0;
    }

    nav .logo span {
        display: none; /* Hide 'ITF SERVICE' text in nav on mobile to avoid overlap */
    }

    nav .container {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.75rem;
        justify-content: center;
    }

    .logo-img {
        height: 50px;
    }

    .cta-card {
        padding: 2.5rem 1rem;
    }
}