/* CSS Variables */
:root {
    --font-sans: "Inter", sans-serif;
    --font-heading: "Space Grotesk", sans-serif;
    --font-mono: "JetBrains Mono", monospace;
    
    --color-background: hsl(222, 47%, 11%);
    --color-foreground: hsl(210, 40%, 98%);
    --color-card: hsl(222, 47%, 13%);
    --color-primary: hsl(217, 91%, 60%);
    --color-primary-foreground: hsl(222, 47%, 11%);
    --color-muted-foreground: hsl(215, 20%, 65%);
    --color-border: hsl(217, 19%, 27%);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-background);
    color: var(--color-foreground);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* Container */
.container {
    width: 100%;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    background: hsl(222, 46%, 11%);
    backdrop-filter: blur(12px);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
    margin-left: 2px;
    margin-right: 2px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--color-foreground);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    transition: opacity 0.2s;
}

.logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-primary);
}

.logo-text {
    color: var(--color-foreground);
}

.nav-desktop {
    display: none;
    align-items: center;
    gap: 31px;
}

@media (min-width: 768px) {
    .nav-desktop {
        display: flex;
    }
}

.nav-link {
    color: hsl(218, 13%, 47%);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.header .btn-primary {
    color: black;
    background: hsl(217, 91%, 60%);
    border-color: hsl(217, 91%, 60%);
}

.menu-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--color-foreground);
    cursor: pointer;
    padding: 0.5rem;
}

@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
}

.menu-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
}

.nav-mobile {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--color-background);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-mobile.active {
    display: flex;
}

.nav-mobile .nav-link {
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.5rem;
    border: 1px solid transparent;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    background: none;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: rgba(59, 130, 246, 0.9);
}

.btn-outline {
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--color-foreground);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
}

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

.btn-white:hover {
    background: #e5e7eb;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
    height: 3.5rem;
    border-radius: 9999px;
}

/* Pages */
.page {
    display: none;
    min-height: calc(100vh - 4rem);
    padding-top: 4rem;
}

.page.active {
    display: block;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, hsl(222, 47%, 11%), rgba(34, 39, 46, 0.8), transparent),
                linear-gradient(to right, rgba(34, 39, 46, 0.9), transparent, rgba(34, 39, 46, 0.9));
}

.hero {
    background: hsl(222, 47%, 11%);
}

.hero .container {
    margin-left: 0;
    margin-right: auto;
    padding-left: 1rem;
}

.hero-content {
    position: relative;
    z-index: 10;
    padding-top: 5rem;
    max-width: 56rem;
    margin-left: 0;
    margin-right: auto;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 0.375rem;
    height: 0.375rem;
    border-radius: 50%;
    background: var(--color-primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 0.9;
    letter-spacing: -0.02em;
    color: white;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 4.5rem;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 5rem;
    }
}

.gradient-text {
    background: linear-gradient(to right, var(--color-primary), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-muted-foreground);
    max-width: 42rem;
    line-height: 1.75;
    margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
    .hero-description {
        font-size: 1.5rem;
    }
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
    }
}

/* Philosophy Section */
.philosophy {
    padding: 6rem 0;
    position: relative;
}

.grid-bg {
    background-size: 50px 50px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

.philosophy-card {
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.02);
    transition: background 0.2s;
}

.philosophy-card:hover {
    background: rgba(255, 255, 255, 0.04);
}

.philosophy-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
    transition: transform 0.2s;
}

.philosophy-card:hover .philosophy-icon {
    transform: scale(1.1);
}

.philosophy-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.philosophy-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.philosophy-card p {
    color: var(--color-muted-foreground);
    line-height: 1.75;
}

/* Features Section */
.features {
    padding: 6rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(34, 39, 46, 0.3);
}

.features-grid {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4rem;
}

@media (min-width: 768px) {
    .features-grid {
        flex-direction: row;
    }
}

.features-content {
    flex: 1;
}

.features-content h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-row {
    display: flex;
    gap: 1rem;
}

.feature-bar {
    width: 0.25rem;
    min-height: 3rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 9999px;
    margin-top: 0.25rem;
}

.feature-row h4 {
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.feature-row p {
    color: var(--color-muted-foreground);
    font-size: 0.875rem;
    line-height: 1.75;
}

.link-primary {
    color: var(--color-primary);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    transition: opacity 0.2s;
}

.link-primary:hover {
    opacity: 0.8;
}

.features-visual {
    flex: 1;
    position: relative;
    aspect-ratio: 1;
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
    .features-visual {
        aspect-ratio: 4/3;
    }
}

.code-visual {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom right, rgba(59, 130, 246, 0.2), rgba(168, 85, 247, 0.2));
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: rgba(59, 130, 246, 0.5);
    padding: 2rem;
    opacity: 0.75;
}

.code-line {
    height: 0.5rem;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 0.25rem;
    margin-bottom: 0.5rem;
    align-self: flex-start;
}

.code-line:nth-child(1) { width: 66.666%; }
.code-line:nth-child(2) { width: 50%; }
.code-line:nth-child(3) { width: 75%; }
.code-line:nth-child(4) { width: 100%; }
.code-line:nth-child(5) { width: 50%; }
.code-line:nth-child(6) { width: 80%; }
.code-line:nth-child(7) { width: 45%; }
.code-line:nth-child(8) { width: 90%; }
.code-line:nth-child(9) { width: 60%; }
.code-line:nth-child(10) { width: 70%; }

/* CTA Section */
.cta {
    padding: 8rem 0;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(59, 130, 246, 0.05);
}

.cta .container {
    position: relative;
}

.cta h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .cta h2 {
        font-size: 3rem;
    }
}

.cta p {
    font-size: 1.25rem;
    color: var(--color-muted-foreground);
    max-width: 42rem;
    margin: 0 auto 2.5rem;
}

/* Page Header */
.page-header {
    position: relative;
    padding-top: 5rem;
    padding-bottom: 4rem;
    overflow: hidden;
}

.page-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.2;
}

.page-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-bg-overlay {
    position: absolute;
    inset: 0;
    background: rgba(34, 39, 46, 0.9);
}

.page-header-content {
    position: relative;
    z-index: 10;
    max-width: 48rem;
    margin: 0 auto;
}

.page-header-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .page-header-content h1 {
        font-size: 3.75rem;
    }
}

.page-header-content p {
    font-size: 1.25rem;
    color: var(--color-muted-foreground);
    line-height: 1.75;
}

.innovation-header {
    text-align: center;
    margin: 0 auto;
}

.innovation-badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    background: rgba(168, 85, 247, 0.1);
    color: #c084fc;
    border: 1px solid rgba(168, 85, 247, 0.2);
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

/* Systems Page */
#systems .page-header .container {
    margin-left: 0;
    margin-right: auto;
    padding-left: 1rem;
}

#systems .page-header-content {
    margin-left: 0;
    margin-right: auto;
}

.systems-content {
    padding: 4rem 0;
}

.systems-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 768px) {
    .systems-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.systems-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.system-block {
    position: relative;
}

.system-number {
    display: block;
    font-family: var(--font-mono);
    color: rgba(59, 130, 246, 0.5);
    font-size: 1.25rem;
    margin-bottom: 1rem;
    transition: color 0.2s;
}

.system-block:hover .system-number {
    color: var(--color-primary);
}

.system-block h3 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.system-block p {
    color: var(--color-muted-foreground);
    font-size: 1.125rem;
    line-height: 1.75;
}

.systems-architecture {
    position: relative;
}

.architecture-card {
    position: sticky;
    top: 6rem;
    padding: 2rem;
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(34, 39, 46, 0.5);
    backdrop-filter: blur(4px);
}

.architecture-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.architecture-flow {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.architecture-item {
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.architecture-item-primary {
    border-color: rgba(59, 130, 246, 0.2);
    background: rgba(59, 130, 246, 0.05);
}

.architecture-models {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.architecture-models .architecture-item {
    text-align: center;
    justify-content: center;
}

.architecture-connector {
    height: 2rem;
    width: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 auto;
}

.badge-small {
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.badge-primary {
    background: rgba(59, 130, 246, 0.2);
    color: var(--color-primary);
    border-color: rgba(59, 130, 246, 0.2);
}

/* Vision Page */
.vision-hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.vision-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.vision-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.vision-bg-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--color-background), rgba(34, 39, 46, 0.8), transparent),
                rgba(34, 39, 46, 0.4);
    backdrop-filter: blur(2px);
}

.vision-mantra {
    position: relative;
    z-index: 10;
    max-width: 80rem;
    margin: 0 auto;
    text-align: center;
    animation: zoomIn 0.8s ease-out;
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.vision-mantra h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.05em;
}

@media (min-width: 768px) {
    .vision-mantra h1 {
        font-size: 4.5rem;
    }
}

@media (min-width: 1024px) {
    .vision-mantra h1 {
        font-size: 5rem;
    }
}

.vision-mantra h1 span {
    display: block;
    margin-bottom: 0.5rem;
}

.vision-content {
    padding: 6rem 0;
    background: rgba(34, 39, 46, 0.2);
}

.vision-narrative {
    max-width: 48rem;
    margin: 0 auto;
}

.vision-badge-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.vision-badge-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(59, 130, 246, 0.5));
}

.vision-badge-line:last-child {
    background: linear-gradient(to left, transparent, rgba(59, 130, 246, 0.5));
}

.vision-badge {
    padding: 0.25rem 1rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--color-primary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 0.25rem;
}

.founder-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.founder-avatar {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-primary-foreground);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
}

.founder-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.founder-info p {
    color: var(--color-primary);
    font-weight: 500;
}

.founder-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--color-muted-foreground);
    text-decoration: none;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    transition: color 0.2s;
}

.founder-link:hover {
    color: var(--color-primary);
}

.founder-link svg {
    width: 1rem;
    height: 1rem;
}

.vision-quote {
    margin-bottom: 3rem;
}

.vision-quote p {
    font-size: 1.5rem;
    font-style: italic;
    color: white;
    font-weight: 500;
    line-height: 1.75;
}

.vision-text {
    padding-left: 1.5rem;
    border-left: 2px solid rgba(59, 130, 246, 0.2);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    color: var(--color-muted-foreground);
}

.vision-text p {
    line-height: 1.75;
}

.vision-text strong {
    color: white;
    font-weight: 600;
}

.engineering-dna {
    padding: 6rem 0;
}

.engineering-dna h2 {
    font-size: 1.875rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
}

.dna-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 56rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .dna-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.dna-card {
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: background 0.2s;
}

.dna-card:hover {
    background: rgba(255, 255, 255, 0.1);
}

.dna-icon {
    padding: 0.75rem;
    border-radius: 0.5rem;
    background: rgba(59, 130, 246, 0.1);
    flex-shrink: 0;
    color: var(--color-primary);
}

.dna-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.dna-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.dna-card p {
    color: var(--color-muted-foreground);
    font-size: 0.875rem;
    line-height: 1.75;
}

/* Innovation Page */
.programs {
    padding: 4rem 0;
}

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

@media (min-width: 768px) {
    .programs-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.program-card {
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(34, 39, 46, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.program-card-highlight {
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 0 30px -10px rgba(59, 130, 246, 0.3);
}

.program-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.program-card > p {
    color: var(--color-muted-foreground);
    margin-bottom: 1.5rem;
}

.program-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

.program-card li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.program-card li svg {
    width: 1rem;
    height: 1rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.looking-for {
    padding: 6rem 0;
    background: rgba(34, 39, 46, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.looking-for h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.looking-for-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 56rem;
    margin: 0 auto 3rem;
}

@media (min-width: 768px) {
    .looking-for-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .looking-for-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.looking-for-item {
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

/* Hackathon Page */
.hackathon-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 3rem;
}

.hackathon-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.1), var(--color-background), var(--color-background));
}

.hackathon-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hackathon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    margin-bottom: 2rem;
}

.hackathon-badge svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-primary);
}

.hackathon-badge span {
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.hackathon-content h1 {
    font-size: 3.75rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .hackathon-content h1 {
        font-size: 6rem;
    }
}

.hackathon-content p {
    font-size: 1.25rem;
    color: var(--color-muted-foreground);
    max-width: 42rem;
    margin: 0 auto 3rem;
}

@media (min-width: 768px) {
    .hackathon-content p {
        font-size: 1.5rem;
    }
}

.hackathon-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

@media (min-width: 640px) {
    .hackathon-buttons {
        flex-direction: row;
    }
}

.hackathon-details {
    padding: 4rem 0;
}

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

@media (min-width: 768px) {
    .details-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.detail-card {
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    text-align: center;
}

.detail-card svg {
    width: 2rem;
    height: 2rem;
    color: var(--color-primary);
    margin: 0 auto 1rem;
}

.detail-card h3 {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.detail-card p {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.challenges {
    padding: 4rem 0;
}

.challenges h2 {
    font-size: 1.875rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
}

.challenges-list {
    max-width: 56rem;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.challenge-row {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(34, 39, 46, 0.3);
    transition: background 0.2s;
}

.challenge-row:hover {
    background: rgba(34, 39, 46, 0.5);
}

.challenge-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-primary);
}

.challenge-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.challenge-row h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.challenge-row p {
    color: var(--color-muted-foreground);
}

/* Contact Page */
.contact-container {
    min-height: calc(100vh - 4rem);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    width: 100%;
    max-width: 72rem;
}

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: 6rem;
    }
}

.contact-form-section h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-form-section > p {
    color: var(--color-muted-foreground);
    margin-bottom: 2rem;
}

.contact-form {
    padding: 2rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(34, 39, 46, 0.3);
    backdrop-filter: blur(4px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(34, 39, 46, 0.5);
    color: var(--color-foreground);
    font-family: inherit;
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(59, 130, 246, 0.5);
}

.form-group textarea {
    resize: none;
    min-height: 150px;
}

.contact-form button[type="submit"] {
    width: 100%;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.contact-form button[type="submit"] svg {
    width: 1.25rem;
    height: 1.25rem;
}

.error-message {
    display: block;
    color: #ef4444;
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.contact-info-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info-block h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.contact-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(34, 39, 46, 0.3);
    text-decoration: none;
    color: inherit;
    transition: background 0.2s;
}

.contact-option:hover {
    background: rgba(34, 39, 46, 0.5);
}

.contact-option-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-primary);
    transition: background 0.2s;
}

.contact-option:hover .contact-option-icon {
    background: rgba(59, 130, 246, 0.2);
}

.contact-option-icon svg {
    width: 1.25rem;
    height: 1.25rem;
}

.contact-option > div:not(.contact-option-icon) {
    flex: 1;
    margin-left: 1rem;
}

.contact-option > div p:first-child {
    font-size: 0.75rem;
    color: var(--color-muted-foreground);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.contact-option > div p:last-child {
    font-weight: 500;
    font-size: 1.125rem;
}

.contact-arrow {
    width: 1rem;
    height: 1rem;
    color: var(--color-muted-foreground);
    transition: color 0.2s;
}

.contact-option:hover .contact-arrow {
    color: var(--color-primary);
}

.founder-card {
    padding: 2rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(34, 39, 46, 0.3);
    backdrop-filter: blur(4px);
}

.founder-card h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.founder-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.founder-avatar-small {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-primary-foreground);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.founder-card-header h4 {
    font-weight: 700;
    font-size: 1.125rem;
    line-height: 1;
}

.founder-card-header p {
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-top: 0.25rem;
}

.founder-card-content blockquote {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-muted-foreground);
    margin-bottom: 1.5rem;
    line-height: 1.75;
}

.founder-card-content p {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
    line-height: 1.75;
    margin-bottom: 1rem;
}

.founder-card-content .founder-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: opacity 0.2s;
}

.founder-card-content .founder-link:hover {
    opacity: 0.8;
}

.founder-card-content .founder-link svg {
    width: 1rem;
    height: 1rem;
}

/* Footer */
.footer {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: hsl(223, 47%, 12%);
    padding: 3rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 24rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
}

.footer-logo svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-primary);
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
    line-height: 1.75;
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--color-muted-foreground);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--color-muted-foreground);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
    }
}

.footer-bottom div {
    display: flex;
    gap: 1.5rem;
}

.footer-bottom a {
    color: var(--color-muted-foreground);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-bottom a:hover {
    color: white;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: var(--color-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    display: none;
    align-items: center;
    gap: 0.75rem;
    z-index: 100;
    animation: slideIn 0.3s ease-out;
}

.toast.show {
    display: flex;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Utility Classes */
.text-primary {
    color: var(--color-primary);
}

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

/* Responsive adjustments */
@media (max-width: 640px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .page-header-content h1 {
        font-size: 2.25rem;
    }
}