/* Main Styles */
:root {
    /* Color Variables */
    --bg-dark: #030311;
    --bg-dark-lighter: #070720;
    --text-light: #ffffff;
    --text-dim: rgba(255, 255, 255, 0.7);
    
    /* Gradient Color Variables */
    --gradient-blue: #3b82f6;
    --gradient-purple: #8b5cf6;
    --gradient-pink: #ec4899;
    --gradient-orange: #f97316;
    --gradient-cyan: #06b6d4;
    --gradient-teal: #14b8a6;
    --gradient-indigo: #4f46e5;
    
    /* Border and Grid Colors */
    --grid-color: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.07);
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.07);
    
    /* Font Variables */
    --font-main: 'Inter', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
    
    /* Shadow Variables */
    --shadow-sm: 0 5px 15px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow-blue: 0 0 25px rgba(59, 130, 246, 0.3);
    --shadow-glow-purple: 0 0 25px rgba(139, 92, 246, 0.3);
    
    /* Animation Times */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-light);
    position: relative;
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* Grid Background */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
    background-size: 70px 70px;
    z-index: -1;
    opacity: 0.2;
    transform: perspective(1000px) rotateX(60deg) scale(2);
    transform-origin: center top;
    pointer-events: none;
}

/* Gradient Orbs */
.gradient-orbs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    mix-blend-mode: screen;
}

.orb-1 {
    top: 10%;
    left: 5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, rgba(59, 130, 246, 0) 70%);
    animation: float 25s ease-in-out infinite alternate;
}

.orb-2 {
    bottom: 5%;
    right: 5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.2) 0%, rgba(236, 72, 153, 0) 70%);
    animation: float 20s ease-in-out infinite alternate-reverse;
}

.orb-3 {
    top: 40%;
    left: 40%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(139, 92, 246, 0) 70%);
    animation: float 30s ease-in-out infinite;
}

/* Particle Background */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -3;
    pointer-events: none;
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background-color: rgba(3, 3, 17, 0.7);
    backdrop-filter: blur(15px);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

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

.logo a {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-light);
}

.logo-image {
    width: 250px;
    height: 250px;
    margin-right: 0.75rem;
    object-fit: contain;
    transition: all var(--transition-normal) ease;
}

.logo-image:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.logo-text {
    font-family: var(--font-display);
    letter-spacing: 0.5px;
}

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

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-normal) ease;
    opacity: 0.8;
}

.nav-link i {
    font-size: 0.7rem;
    margin-left: 0.25rem;
    opacity: 0.7;
}

.nav-link:hover {
    color: var(--gradient-blue);
    opacity: 1;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--gradient-blue), transparent);
    transition: width var(--transition-normal) ease;
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--gradient-blue), var(--gradient-indigo));
    color: var(--text-light);
    font-weight: 500;
    border-radius: 4px;
    transition: all var(--transition-normal) ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: var(--shadow-glow-blue);
    opacity: 0.9;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--gradient-purple), var(--gradient-pink));
    opacity: 0;
    transition: opacity var(--transition-normal) ease;
    z-index: -1;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-purple);
    opacity: 1;
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-text {
    margin-right: 0.5rem;
}

.mobile-menu-toggle {
    display: none;
    width: 30px;
    height: 20px;
    position: relative;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    position: absolute;
    height: 2px;
    width: 100%;
    background: var(--text-light);
    border-radius: 2px;
    transition: all var(--transition-normal) ease;
}

.mobile-menu-toggle span:nth-child(1) {
    top: 0;
}

.mobile-menu-toggle span:nth-child(2) {
    top: 9px;
}

.mobile-menu-toggle span:nth-child(3) {
    top: 18px;
}

/* Main Content Area */
.hero-section {
    min-height: 100vh;
    padding-top: 80px;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: 2rem;
    position: relative;
    padding: 4rem 0;
}

/* Left Content */
.hero-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.tagline {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    opacity: 0.6;
    font-weight: 500;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    display: block;
    background-size: 200% auto;
    background-image: linear-gradient(90deg, 
        var(--gradient-blue), 
        var(--gradient-indigo), 
        var(--gradient-purple), 
        var(--gradient-indigo), 
        var(--gradient-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
}

.gradient-text::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-blue), transparent);
    opacity: 0.7;
}

.feature-quote {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    position: relative;
}

.quote-line {
    height: 1px;
    background: linear-gradient(90deg, var(--gradient-blue), transparent);
    flex-grow: 1;
    margin-top: 1.5rem;
    position: relative;
    opacity: 0.7;
}

.quote-line::before {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--gradient-blue);
    transform: translate(50%, -50%);
    box-shadow: 0 0 10px var(--gradient-blue);
    opacity: 0.8;
}

.quote-content {
    padding: 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    background-color: var(--glass-bg);
    margin-left: 1rem;
    backdrop-filter: blur(10px);
}

.feature-text {
    font-family: var(--font-display);
    font-size: 0.9rem;
    line-height: 1.5;
    opacity: 0.9;
}

/* Center Content - AI Visualization */
.hero-center {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.ai-visualization {
    position: relative;
    width: 100%;
    height: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.ai-sphere {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sphere-core {
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, var(--gradient-blue), var(--gradient-indigo));
    border-radius: 50%;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.3);
    opacity: 0.9;
}

.sphere-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.05);
    opacity: 0.8;
}

.ring-1 {
    width: 150px;
    height: 150px;
    border: 1px solid transparent;
    background: linear-gradient(var(--bg-dark), var(--bg-dark)) padding-box,
                linear-gradient(to right, var(--gradient-blue), var(--gradient-indigo)) border-box;
    animation: rotate 15s linear infinite;
}

.ring-2 {
    width: 220px;
    height: 220px;
    border: 1px solid transparent;
    background: linear-gradient(var(--bg-dark), var(--bg-dark)) padding-box,
                linear-gradient(to right, var(--gradient-indigo), var(--gradient-purple)) border-box;
    animation: rotate 25s linear infinite reverse;
}

.ring-3 {
    width: 280px;
    height: 280px;
    border: 1px solid transparent;
    background: linear-gradient(var(--bg-dark), var(--bg-dark)) padding-box,
                linear-gradient(to right, var(--gradient-purple), var(--gradient-pink)) border-box;
    animation: rotate 35s linear infinite;
}

.sphere-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

.ai-connections {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.connections-svg {
    width: 100%;
    height: 100%;
}

.connection-path {
    fill: none;
    stroke: url(#connection-gradient);
    stroke-width: 0.75;
    stroke-dasharray: 5, 10;
    opacity: 0.4;
}

.ai-description {
    text-align: center;
    margin-top: 40px;
    font-size: 0.9rem;
    opacity: 0.7;
    font-family: var(--font-display);
    letter-spacing: 0.5px;
}

/* Right Content */
.hero-right {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-end;
}

.status-indicator {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--gradient-blue), var(--gradient-indigo));
    border-radius: 50%;
    margin-right: 0.5rem;
    animation: pulse 1.5s infinite;
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.3);
}

@keyframes pulse {
    0% {
        opacity: 0.8;
        transform: scale(1);
    }
    50% {
        opacity: 0.4;
        transform: scale(0.8);
    }
    100% {
        opacity: 0.8;
        transform: scale(1);
    }
}

.status-text {
    font-family: var(--font-display);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
}

.feature-box {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    background-color: var(--glass-bg);
    margin-bottom: 3rem;
    backdrop-filter: blur(10px);
}

.feature-arrow {
    margin-right: 0.5rem;
    color: var(--gradient-blue);
    opacity: 0.8;
}

.feature-label {
    font-family: var(--font-display);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.9;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 3rem;
    width: 100%;
}

.feature-item {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0.5rem 0;
    transition: transform var(--transition-normal) ease;
    opacity: 0.7;
}

.feature-item:hover {
    transform: translateX(-10px);
    opacity: 1;
}

.feature-item .feature-arrow {
    margin-right: 0.5rem;
    transition: color var(--transition-normal) ease;
}

.feature-item:hover .feature-arrow {
    color: var(--gradient-purple);
}

.nav-controls {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: auto;
}

.nav-intro, .nav-menu-btn {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: color var(--transition-normal) ease;
    font-family: var(--font-display);
    opacity: 0.6;
}

.nav-intro:hover, .nav-menu-btn:hover {
    color: var(--gradient-blue);
    opacity: 1;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.5;
    cursor: pointer;
    transition: opacity var(--transition-normal) ease;
}

.scroll-indicator:hover {
    opacity: 0.8;
}

.scroll-text {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    font-family: var(--font-display);
}

.scroll-arrow {
    font-size: 1.5rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 4rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr 1.2fr 1fr;
    }
}

@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-right {
        grid-column: 1 / -1;
        align-items: center;
        margin-top: 2rem;
    }
    
    .features-list {
        align-items: center;
    }
    
    .feature-item {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .logo-image {
        width: 350px;
        height: 350px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-left, .hero-center {
        text-align: center;
        align-items: center;
    }
    
    .gradient-text::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .feature-quote {
        flex-direction: column;
        align-items: center;
    }
    
    .quote-line {
        width: 100%;
        margin-top: 0;
    }
    
    .quote-content {
        margin-left: 0;
        margin-top: 1rem;
        width: 100%;
    }
    
    .hero-title {
        font-size: 3rem;
    }
}


/* Additional styles for marathon proposal website */

/* Section Container */
.section-container {
    padding: 6rem 0;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background-size: 200% auto;
    background-image: linear-gradient(90deg, 
        var(--gradient-blue), 
        var(--gradient-indigo), 
        var(--gradient-purple), 
        var(--gradient-indigo), 
        var(--gradient-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.section-subtitle {
    font-size: 1.2rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Vision Section */
.vision-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.vision-card {
    padding: 2rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(10px);
    text-align: center;
    transition: transform var(--transition-normal) ease;
}

.vision-card:hover {
    transform: translateY(-10px);
}

.vision-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.vision-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.vision-card p {
    line-height: 1.6;
    opacity: 0.9;
}

/* Challenges Section */
.challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.challenge-card {
    padding: 2rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(10px);
    transition: transform var(--transition-normal) ease;
}

.challenge-card:hover {
    transform: translateY(-5px);
}

.challenge-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.challenge-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.challenge-card p {
    line-height: 1.6;
    opacity: 0.9;
}

/* Users Section */
.users-content {
    margin-top: 2rem;
}

.users-category-title {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-light);
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.user-card {
    padding: 2rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(10px);
    transition: transform var(--transition-normal) ease;
}

.user-card:hover {
    transform: translateY(-5px);
}

.user-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.user-card h4 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.user-card p {
    margin-bottom: 1rem;
    opacity: 0.8;
}

.user-card ul {
    list-style: none;
    padding: 0;
}

.user-card li {
    padding: 0.3rem 0;
    opacity: 0.9;
    position: relative;
    padding-left: 1.5rem;
}

.user-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--gradient-blue);
}

/* Features Section */
.features-content {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.feature-module {
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 3rem;
}

.feature-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}

.feature-icon-large {
    font-size: 4rem;
    margin-right: 2rem;
}

.feature-title-section h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.feature-subtitle {
    font-size: 1.1rem;
    opacity: 0.8;
}

.feature-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-point {
    display: flex;
    align-items: flex-start;
    padding: 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.01);
    backdrop-filter: blur(5px);
}

.feature-point i {
    font-size: 1.5rem;
    margin-right: 1rem;
    margin-top: 0.2rem;
    color: var(--gradient-blue);
}

.feature-point h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.feature-point p {
    opacity: 0.9;
    line-height: 1.5;
}

/* Technology Section */
.tech-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.tech-category h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    text-align: center;
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.tech-item {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(10px);
    transition: transform var(--transition-normal) ease;
}

.tech-item:hover {
    transform: translateY(-3px);
}

.tech-item i {
    font-size: 1.5rem;
    margin-right: 0.8rem;
    color: var(--gradient-blue);
}

.performance-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.metric {
    text-align: center;
    padding: 2rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(10px);
}

.metric-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background-size: 200% auto;
    background-image: linear-gradient(90deg, 
        var(--gradient-blue), 
        var(--gradient-indigo), 
        var(--gradient-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.metric-label {
    font-size: 1rem;
    opacity: 0.8;
}

/* Timeline Section */
.timeline-content {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-period {
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 3rem;
}

.timeline-header h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--text-light);
    text-align: center;
}

.timeline-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.timeline-item {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.01);
    backdrop-filter: blur(5px);
}

.timeline-icon {
    font-size: 2rem;
    margin-right: 1.5rem;
}

.timeline-content-item h4 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.timeline-content-item p {
    opacity: 0.9;
}

/* Contact Section */
.contact-content {
    text-align: center;
}

.contact-cta {
    margin-top: 2rem;
}

.large-btn {
    padding: 1rem 2rem;
    font-size: 1.2rem;
}

/* Footer */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    background-color: rgba(3, 3, 17, 0.8);
    backdrop-filter: blur(15px);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    opacity: 0.7;
}

/* Marathon specific styles */
.marathon-sphere {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-sphere {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
    
    .feature-header {
        flex-direction: column;
        text-align: center;
    }
    
    .feature-icon-large {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .feature-points {
        grid-template-columns: 1fr;
    }
    
    .users-grid {
        grid-template-columns: 1fr;
    }
    
    .challenges-grid {
        grid-template-columns: 1fr;
    }
    
    .vision-content {
        grid-template-columns: 1fr;
    }
    
    .performance-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .performance-metrics {
        grid-template-columns: 1fr;
    }
    
    .timeline-item {
        flex-direction: column;
        text-align: center;
    }
    
    .timeline-icon {
        margin-right: 0;
        margin-bottom: 1rem;
    }
}

/* Cost Breakdown Section */
.cost-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.cost-summary {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
}

.cost-total h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.total-amount {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-display);
    margin-bottom: 0.5rem;
}

.cost-note {
    font-size: 0.9rem;
    opacity: 0.7;
    font-style: italic;
}

.cost-breakdown {
    margin-top: 2rem;
}

.cost-table {
    padding: 0;
    overflow: hidden;
    border-radius: 15px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
}

.cost-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.cost-table th {
    background: rgba(59, 130, 246, 0.1);
    padding: 1.25rem 1rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
}

.cost-table td {
    padding: 1.25rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    vertical-align: middle;
}

.cost-table tbody tr:hover {
    background: rgba(59, 130, 246, 0.02);
}

.cost-category {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.cost-category i {
    font-size: 1.1rem;
    width: 20px;
}

.cost-category span {
    font-weight: 600;
}

.cost-amount {
    font-weight: 700;
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--gradient-blue);
}

.cost-percentage {
    font-weight: 600;
    color: var(--text-dim);
}

.total-row {
    background: rgba(139, 92, 246, 0.1) !important;
}

.total-row td {
    border-top: 2px solid var(--gradient-purple);
    font-size: 1.1rem;
    padding: 1.5rem 1rem;
}

.cost-notes {
    padding: 1.5rem;
    border-radius: 15px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    margin-top: 1rem;
}

.cost-notes h4 {
    margin-bottom: 1rem;
    color: var(--gradient-blue);
}

.cost-notes ul {
    list-style: none;
    padding: 0;
}

.cost-notes li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    opacity: 0.9;
}

.cost-notes li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--gradient-purple);
    font-weight: bold;
}

@media (max-width: 768px) {
    .cost-table {
        overflow-x: auto;
    }
    
    .cost-table table {
        min-width: 600px;
    }
    
    .total-amount {
        font-size: 2.5rem;
    }
    
    .cost-table th,
    .cost-table td {
        padding: 1rem 0.75rem;
    }
}

@media (max-width: 480px) {
    .total-amount {
        font-size: 2rem;
    }
    
    .cost-table th,
    .cost-table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.9rem;
    }
}

/* Detailed Functions Section */
.functions-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.function-category {
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 2rem;
}

.function-category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.category-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--glass-border);
}

.function-category-header h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--text-light);
    margin: 0;
}

.function-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.function-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.01);
    backdrop-filter: blur(5px);
    transition: all var(--transition-normal) ease;
}

.function-item:hover {
    transform: translateY(-2px);
    background: rgba(59, 130, 246, 0.02);
    border-color: rgba(59, 130, 246, 0.3);
}

.function-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-blue), var(--gradient-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: white;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.function-content {
    flex: 1;
}

.function-content h4 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--text-light);
}

.function-content p {
    opacity: 0.9;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.function-content ul {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
}

.function-content li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    opacity: 0.9;
    line-height: 1.5;
}

.function-content li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--gradient-blue);
    font-weight: bold;
}

.function-content strong {
    color: var(--gradient-purple);
    font-weight: 600;
}

@media (max-width: 768px) {
    .function-category {
        padding: 1.5rem;
    }
    
    .function-category-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .function-category-header h3 {
        font-size: 1.5rem;
    }
    
    .function-item {
        flex-direction: column;
        gap: 1rem;
    }
    
    .function-number {
        align-self: flex-start;
    }
}

@media (max-width: 480px) {
    .functions-content {
        gap: 2rem;
    }
    
    .function-category {
        padding: 1rem;
    }
    
    .function-item {
        padding: 1rem;
    }
    
    .function-content h4 {
        font-size: 1.1rem;
    }
}