/* VerseStudio Design System - Digital Observatory Aesthetic */
:root {
    --color-surface: #0b1326;
    --color-surface-container-low: #131b2e;
    --color-surface-container: #171f33;
    --color-surface-container-high: #222a3d;
    --color-surface-container-highest: #2d3449;
    --color-surface-container-lowest: #060e20;
    --color-primary: #c3c0ff;
    --color-primary-container: #4f46e5;
    --color-tertiary: #4cd7f6;
    --color-on-surface: #dae2fd;
    --color-on-surface-variant: #c7c4d8;
    --color-outline: rgba(145, 143, 161, 0.2);
    
    --font-main: 'Inter', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--color-surface);
    color: var(--on-surface);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

h1, h2, h3, h4 {
    color: #ffffff;
    letter-spacing: -0.02em;
}

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

ul {
    list-style: none;
}

/* Glass Navigation */
.nav-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(11, 19, 38, 0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(70, 69, 85, 0.1);
    height: 80px;
    display: flex;
    align-items: center;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 90%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -1px;
}

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

.nav-links a {
    color: var(--color-on-surface-variant);
    font-weight: 500;
    font-size: 0.9rem;
}

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

.btn-get-started {
    background: linear-gradient(135deg, var(--color-primary-container), var(--color-tertiary));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: radial-gradient(circle at 50% 50%, rgba(79, 70, 229, 0.1) 0%, rgba(11, 19, 38, 0) 70%);
    position: relative;
    text-align: center;
}

.hero-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(79, 70, 229, 0.1);
    color: var(--color-tertiary);
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 2rem;
}

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

.hero p {
    color: var(--color-on-surface-variant);
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 3rem;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-container), var(--color-tertiary));
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition-smooth);
}

.btn-secondary {
    border: 1px solid var(--color-outline);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition-smooth);
}

.btn-secondary:hover {
    background: var(--color-surface-container-highest);
}

/* Sections General */
section {
    padding: 100px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 90%;
}

.section-label {
    color: var(--color-tertiary);
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 3px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
    display: block;
}

.section-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 3rem;
}

/* About Section */
.about {
    background-color: var(--color-surface-container-low);
}

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

.about-text p {
    color: var(--color-on-surface-variant);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.mission-stats {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
}

.stat-item h4 {
    font-size: 2.5rem;
    font-weight: 900;
}

.stat-item span {
    color: var(--color-on-surface-variant);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

/* Product Cards */
.products-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.innovation-card {
    background-color: var(--color-surface-container);
    padding: 3rem;
    border-radius: 1.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.innovation-card:hover {
    transform: scale(1.02);
    background-color: var(--color-surface-container-highest);
}

.card-tag {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: rgba(76, 215, 246, 0.1);
    color: var(--color-tertiary);
    padding: 0.2rem 0.6rem;
    border-radius: 99px;
    font-size: 0.6rem;
    font-weight: 800;
}

.card-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 2rem;
}

.innovation-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.innovation-card p {
    color: var(--color-on-surface-variant);
    margin-bottom: 2rem;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.service-item {
    background-color: var(--color-surface-container);
    padding: 2rem;
    border-radius: 1rem;
    transition: var(--transition-smooth);
}

.service-item:hover {
    background-color: var(--color-surface-container-high);
}

.service-item h4 {
    margin: 1rem 0;
}

.service-item p {
    color: var(--color-on-surface-variant);
    font-size: 0.9rem;
}

/* Stack Section */
.stack-box {
    background: var(--color-surface-container-high);
    border-radius: 2rem;
    padding: 4rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.stack-feature {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--color-surface-container-highest);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-tertiary);
    flex-shrink: 0;
}

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

.contact-form {
    background: var(--color-surface-container);
    padding: 3rem;
    border-radius: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--color-on-surface-variant);
}

input, textarea {
    width: 100%;
    background: var(--color-surface-container-lowest);
    border: none;
    padding: 1rem;
    border-radius: 0.75rem;
    color: white;
    font-family: inherit;
}

input:focus, textarea:focus {
    outline: 2px solid var(--color-primary-container);
}

/* Footer */
footer {
    padding: 80px 0;
    border-top: 1px solid var(--color-outline);
    background-color: #060e20;
}

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
}

.footer-desc {
    color: var(--color-on-surface-variant);
    max-width: 300px;
}

.footer-links h4 {
    margin-bottom: 1.5rem;
}

.footer-links a {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--color-on-surface-variant);
    font-size: 0.9rem;
}

.footer-bottom {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    display: flex;
    justify-content: space-between;
    color: var(--color-on-surface-variant);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 968px) {
    .hero h1 { font-size: 3rem; }
    .about-grid, .products-grid, .stack-box, .contact-grid {
        grid-template-columns: 1fr;
    }
    .mission-stats { flex-direction: column; gap: 1.5rem; }
}