/* Design Tokens */
:root {
    --primary: #0a192f;
    --secondary: #172a45;
    --accent: #64ffda;
    /* Technical Cyan */
    --accent-dark: #49d4b8;
    --text-white: #e6f1ff;
    --text-slate: #8892b0;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Background Gradients */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 30%, #1d3557 0%, #0a192f 100%);
    z-index: -2;
}

.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://www.transparenttextures.com/patterns/cubes.png');
    opacity: 0.1;
    z-index: -1;
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 50px;
    background: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    color: var(--text-white);
    font-size: 24px;
    font-weight: 700;
    font-family: var(--font-heading);
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--text-white);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 10%;
    margin-top: 50px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
    max-width: 1200px;
}

.hero-text h1 {
    color: var(--text-white);
    font-size: 64px;
    font-family: var(--font-heading);
    margin-bottom: 10px;
}

.hero-text h2 {
    color: var(--accent);
    font-size: 32px;
}

.hero-text p {
    margin: 20px 0;
    max-width: 500px;
    font-size: 18px;
}

.hero-cta {
    margin-top: 30px;
}

.btn {
    padding: 12px 28px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    margin-right: 15px;
}

.btn-primary {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
}

.btn-primary:hover {
    background: rgba(100, 255, 218, 0.1);
}

.btn-secondary {
    color: var(--text-white);
}

.hero-image {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.hero-image img {
    width: 100%;
    display: block;
    filter: grayscale(20%);
    transition: var(--transition);
}

.hero-image:hover img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

/* Sections Global */
section {
    padding: 100px 10% 50px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 50px;
}

.section-header h3 {
    color: var(--text-white);
    font-size: 28px;
    font-family: var(--font-heading);
    margin-bottom: 10px;
}

.section-header .line {
    width: 60px;
    height: 4px;
    background: var(--accent);
}

/* Glass Card */
.glass-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(15px);
    border-radius: 12px;
    padding: 30px;
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(100, 255, 218, 0.4);
}

/* Grid System */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.expertise-card h4 {
    color: var(--text-white);
    margin: 15px 0;
    font-family: var(--font-heading);
}

.expertise-card ul {
    list-style: none;
}

.expertise-card li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 14px;
}

.expertise-card li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.icon {
    font-size: 32px;
    margin-bottom: 10px;
}

/* Timeline */
.timeline {
    display: grid;
    gap: 20px;
}

.timeline-item {
    position: relative;
    padding-left: 40px;
}

.timeline-item .date {
    color: var(--accent);
    font-weight: 600;
    font-size: 14px;
}

.timeline h4 {
    color: var(--text-white);
    margin-top: 5px;
}

.timeline h5 {
    color: var(--text-slate);
    font-weight: 400;
    font-size: 14px;
    margin-bottom: 10px;
}

/* Footer */
footer {
    padding: 80px 10% 30px;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

.footer-content .logo {
    margin-bottom: 20px;
}

.contact-info {
    margin-bottom: 25px;
}

.contact-info .email {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.contact-info .email:hover {
    border-bottom: 1px solid var(--accent);
}

.footer-content p {
    max-width: 600px;
    margin: 0 auto 30px;
    font-style: italic;
}

.copyright {
    font-size: 12px;
    color: var(--text-slate);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease-out;
}

.fade-in.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 48px;
    }

    .hero-text p {
        margin: 20px auto;
    }

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

    header {
        padding: 20px;
    }

    .nav-links {
        display: none;
    }

    /* Mobile Menu Toggle logic to be added in JS */
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 36px;
    }

    section {
        padding: 80px 5% 40px;
    }
}