/* CoreSpaceX Design System & Theme Engine */

:root {
    --primary-color: #0066FF;
    --primary-hover: #0052CC;
    --secondary-color: #0B132B;
    --accent-color: #00F0FF;
    --bg-color: #080C14;
    --surface-color: #0F172A;
    --surface-card: #131C31;
    --heading-color: #F8FAFC;
    --body-color: #94A3B8;
    --muted-color: #64748B;
    --border-color: #1E293B;
    --border-glow: rgba(0, 102, 255, 0.3);
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Outfit', system-ui, -apple-system, sans-serif;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
    --glass-bg: rgba(15, 23, 42, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-primary);
    background-color: var(--bg-color);
    color: var(--body-color);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--heading-color);
    line-height: 1.25;
    font-weight: 700;
}

a { color: var(--primary-color); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-color); }

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Nav */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.brand-logo {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 800;
    color: var(--heading-color);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--body-color);
    font-weight: 500;
    font-size: 15px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #0044B3);
    color: #FFFFFF;
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.35);
}

.btn-primary:hover {
    box-shadow: 0 6px 28px rgba(0, 102, 255, 0.5);
    transform: translateY(-2px);
    color: #FFF;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--heading-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    color: var(--heading-color);
}

/* Hero Section */
.hero-section {
    padding-top: calc(var(--header-height) + 80px);
    padding-bottom: 100px;
    position: relative;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.18) 0%, rgba(0, 240, 255, 0.05) 50%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 860px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(0, 102, 255, 0.12);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: 50px;
    color: var(--accent-color);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 54px;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
    background: linear-gradient(180deg, #FFFFFF 0%, #94A3B8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    font-size: 20px;
    color: var(--body-color);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

/* Section styling */
.section {
    padding: 100px 0;
    position: relative;
}

.section-title-wrap {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.section-tag {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
    display: block;
}

.section-title {
    font-size: 38px;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 17px;
    color: var(--body-color);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-size: 22px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 20px;
    margin-bottom: 12px;
}

.card-desc {
    font-size: 15px;
    color: var(--body-color);
    line-height: 1.6;
}

/* Footer */
.site-footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 40px 0;
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 14px;
    color: var(--muted-color);
    max-width: 320px;
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--heading-color);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--muted-color);
    font-size: 14px;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 14px;
    color: var(--muted-color);
}

/* Mobile Nav Toggle */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--heading-color);
    font-size: 24px;
    cursor: pointer;
}

@media (max-width: 992px) {
    .hero-title { font-size: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .main-nav { display: none; }
    .mobile-toggle { display: block; }
}