/* ============================================
   Reality Shift - XR Hackathon
   Cyan/Blue accent theme
   ============================================ */

:root {
    /* Colors - Cyan/Blue accent theme */
    --primary: #5DA0FF;
    --primary-light: #7EC8E3;
    --primary-dark: #3D8DB5;
    --accent: #6BB8D9;

    /* Neutrals */
    --black: #0A0A0A;
    --dark: #0D1117;
    --dark-gray: #161B22;
    --mid-gray: #21262D;
    --light-gray: #8B949E;
    --off-white: #E6EDF3;
    --white: #FFFFFF;

    /* Typography - Wide, bold display font */
    --font-display: 'Bebas Neue', 'Anton', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    /* Transitions */
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --duration: 0.6s;
}

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

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

body {
    font-family: var(--font-mono);
    font-weight: 300;
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ============================================
   Navigation
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.5rem var(--space-lg);
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--mid-gray);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
}

.logo-icon {
    height: 20px;
    width: auto;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--light-gray);
    transition: color var(--duration) var(--ease);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--primary);
    transition: width var(--duration) var(--ease);
}

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

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

.nav-cta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--primary);
    color: var(--primary);
    transition: all var(--duration) var(--ease);
}

.nav-cta:hover {
    background: var(--primary);
    color: var(--black);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-xl) var(--space-lg);
    position: relative;
}

.hero-grid {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.hero-content {
    max-width: 800px;
}

.hero-date {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--primary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(4rem, 12vw, 10rem);
    font-weight: 400;
    line-height: 0.9;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
}

.hero-banner {
    height: 300px;
    width: auto;
    display: block;
    margin-left: -5px;
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--primary-light);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--light-gray);
    max-width: 480px;
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
}

/* Buttons */
.btn {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
}

.btn-primary {
    background: var(--primary);
    color: var(--black);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--mid-gray);
}

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

.btn-large {
    padding: var(--space-md) var(--space-lg);
    font-size: 0.875rem;
}

/* Hero Visual - Glyph Animation */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.glyph-container {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.glyph-ring {
    position: absolute;
    border: 1px solid var(--mid-gray);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

.glyph-ring:nth-child(1) {
    width: 100%;
    height: 100%;
    animation-delay: 0s;
}

.glyph-ring:nth-child(2) {
    width: 70%;
    height: 70%;
    border-color: var(--primary-dark);
    animation-delay: 0.5s;
}

.glyph-ring:nth-child(3) {
    width: 40%;
    height: 40%;
    border-color: var(--primary);
    animation-delay: 1s;
}

.glyph-dot {
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 40px var(--primary), 0 0 80px var(--primary-dark);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    color: var(--light-gray);
}

.scroll-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, var(--light-gray), transparent);
}

/* ============================================
   Info Strip
   ============================================ */

.info-strip {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-md) var(--space-md);
    background: var(--dark);
    border-top: 1px solid var(--mid-gray);
    border-bottom: 1px solid var(--mid-gray);
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.info-label {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--light-gray);
}

.info-value {
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.info-divider {
    width: 1px;
    height: 40px;
    background: var(--mid-gray);
}

/* ============================================
   About Section
   ============================================ */

.about {
    padding: 15.625rem var(--space-lg);
}

.about-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--light-gray);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 400;
    line-height: 1;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

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

.about-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about-text {
    font-size: 1.125rem;
    color: var(--light-gray);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    color: var(--primary);
    transition: gap var(--duration) var(--ease);
}

.link-arrow:hover {
    gap: var(--space-md);
}

.link-arrow .arrow {
    transition: transform var(--duration) var(--ease);
}

.link-arrow:hover .arrow {
    transform: translateX(4px);
}

/* ============================================
   Features Section
   ============================================ */

.features {
    padding: var(--space-lg) var(--space-md);
    background: var(--dark);
}

.features-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.feature-card {
    padding: var(--space-lg);
    border: 1px solid var(--mid-gray);
    transition: all var(--duration) var(--ease);
}

.feature-card:hover {
    border-color: var(--primary);
    background: var(--dark-gray);
}

.feature-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--primary);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.feature-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.feature-desc {
    font-size: 0.9375rem;
    color: var(--light-gray);
    line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */

.cta {
    padding: 15.625rem var(--space-md);
    text-align: center;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta-dots {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-sm);
    max-width: 200px;
    margin: 0 auto var(--space-lg);
}

.cta-dots span {
    width: 8px;
    height: 8px;
    background: var(--mid-gray);
    border-radius: 50%;
    transition: background var(--duration) var(--ease);
}

.cta-dots span:nth-child(3),
.cta-dots span:nth-child(7),
.cta-dots span:nth-child(8),
.cta-dots span:nth-child(9),
.cta-dots span:nth-child(13) {
    background: var(--primary);
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    margin-bottom: 3.75rem;
}

.cta-link {
    margin-top: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--light-gray);
    letter-spacing: 0.1em;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    padding: var(--space-lg) var(--space-md);
    border-top: 1px solid var(--mid-gray);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    letter-spacing: 0.1em;
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-links a {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--light-gray);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: color var(--duration) var(--ease);
}

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

.footer-copy {
    font-size: 0.75rem;
    color: var(--light-gray);
}

/* ============================================
   Coming Soon Page
   ============================================ */

.coming-soon {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-lg);
}

.coming-soon-content {
    text-align: center;
}

.coming-soon-title {
    font-family: var(--font-display);
    font-size: clamp(4rem, 10vw, 8rem);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-sm);
}

.coming-soon-text {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--primary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-lg);
}

.register-iframe {
    width: 100%;
    max-width: 800px;
    min-width: 500px;
    height: 500px;
    border: 1px solid #bfcbda88;
    border-radius: 4px;
}

/* ============================================
   Sponsors Page
   ============================================ */

.sponsors-page {
    min-height: 100vh;
    padding: calc(var(--space-xl) + 60px) var(--space-lg) var(--space-xl);
}

.sponsors-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.sponsors-subtitle {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    color: var(--light-gray);
    margin-top: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.sponsor-card {
    background: var(--dark-gray);
    border: 1px solid var(--mid-gray);
    border-radius: 8px;
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    transition: all var(--duration) var(--ease);
}

.sponsor-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.sponsor-card img {
    max-width: 100%;
    max-height: 120px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    transition: opacity var(--duration) var(--ease);
}

.sponsor-card:hover img {
    opacity: 1;
}

.sponsors-cta {
    margin-top: var(--space-lg);
}

.sponsors-interest {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--light-gray);
    margin-bottom: var(--space-sm);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .about-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .sponsors-grid {
        grid-template-columns: 1fr;
    }

    .features-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --space-md: 1.5rem;
        --space-lg: 3rem;
        --space-xl: 5rem;
    }

    .nav-links {
        display: none;
    }

    .info-strip {
        flex-direction: column;
        gap: var(--space-md);
    }

    .info-divider {
        width: 40px;
        height: 1px;
    }

    .footer-container {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}