:root {
    --primary: #6c5ce7;
    --secondary: #00cec9;
    --dark: #0f0e26;
    --light: #f8f9fa;
    --accent: #fd79a8;
    --space-gradient: linear-gradient(135deg, #0f0e26 0%, #2d3436 100%);
}

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

body {
    font-family: 'Space Mono', monospace;
    color: var(--light);
    background-color: var(--dark);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: var(--secondary);
    transition: all 0.3s ease;
}

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

/* Header Styles */
.stellar-header {
    position: relative;
    height: 100vh;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: var(--space-gradient);
    overflow: hidden;
    padding: 2rem;
}

.title {
    font-size: 4rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5rem;
    color: var(--light);
    text-shadow: 0 0 10px var(--secondary), 0 0 20px var(--primary);
    z-index: 10;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 2rem;
    z-index: 10;
}

/* Star Field Animation */
.star-field {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.stars:nth-child(1) {
    animation: animStar 50s linear infinite;
    background-image: radial-gradient(1px 1px at 50px 100px, white, rgba(0,0,0,0));
    background-size: 100px 100px;
}

.stars:nth-child(2) {
    animation: animStar 100s linear infinite;
    background-image: radial-gradient(1px 1px at 150px 200px, #ddd, rgba(0,0,0,0));
    background-size: 200px 200px;
}

.stars:nth-child(3) {
    animation: animStar 150s linear infinite;
    background-image: radial-gradient(1px 1px at 250px 300px, #aaa, rgba(0,0,0,0));
    background-size: 300px 300px;
}

@keyframes animStar {
    from {
        transform: translateY(0px);
    }
    to {
        transform: translateY(-1000px);
    }
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    margin: 0.5rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: 2px solid var(--primary);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--dark);
    border: 2px solid var(--secondary);
}

.btn-secondary:hover {
    background-color: transparent;
    color: var(--secondary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn-outline {
    background-color: transparent;
    color: var(--secondary);
    border: 2px solid var(--secondary);
}

.btn-outline:hover {
    background-color: var(--secondary);
    color: var(--dark);
    transform: translateY(-3px);
}

/* Main Content Styles */
.project-intro {
    text-align: center;
    padding: 4rem 0;
    margin-bottom: 2rem;
}

.project-intro h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

.project-intro p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 2rem;
}

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

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 4rem 0;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
    border-color: var(--secondary);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

.feature-card h3 {
    color: var(--secondary);
    margin-bottom: 1rem;
}

/* Visualization Preview */
.visualization-preview {
    margin: 6rem 0;
}

.visualization-preview h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: var(--secondary);
}

.panel-preview {
    display: flex;
    align-items: center;
    gap: 3rem;
    margin-bottom: 4rem;
}

.panel-preview.reverse {
    flex-direction: row-reverse;
}

.panel-description {
    flex: 1;
}

.panel-description h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.panel-description ul {
    margin: 1.5rem 0;
    padding-left: 1.5rem;
}

.panel-description li {
    margin-bottom: 0.5rem;
}

.panel-image {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.panel-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.panel-image:hover img {
    transform: scale(1.05);
}

/* Data Section */
.data-section {
    margin: 6rem 0;
    text-align: center;
}

.data-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

.data-section p {
    max-width: 800px;
    margin: 0 auto 3rem;
    font-size: 1.2rem;
}

.data-sources {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.data-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.data-card h3 {
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.data-card ul {
    list-style-type: none;
}

.data-card li {
    margin-bottom: 0.8rem;
    position: relative;
    padding-left: 1.5rem;
}

.data-card li::before {
    content: "•";
    color: var(--secondary);
    position: absolute;
    left: 0;
}

.data-update {
    margin-top: 2rem;
    font-style: italic;
    color: var(--secondary);
}

/* Footer */
.stellar-footer {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 3rem 0;
    text-align: center;
    margin-top: 4rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.social-links {
    margin-top: 1.5rem;
}

.social-links a {
    display: inline-block;
    margin: 0 10px;
    font-size: 1.5rem;
    color: var(--light);
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .panel-preview, .panel-preview.reverse {
        flex-direction: column;
    }
    
    .panel-description, .panel-image {
        width: 100%;
    }
    
    .features-grid, .data-sources {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 2rem;
        letter-spacing: 0.2rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .cta-buttons {
        display: flex;
        flex-direction: column;
    }
}
/* Data Source Notice */
.data-source-notice {
    background: rgba(0, 206, 201, 0.1);
    border-left: 4px solid var(--secondary);
    padding: 1rem;
    margin: 2rem auto;
    max-width: 800px;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-radius: 0 8px 8px 0;
}

.data-source-notice i {
    font-size: 2rem;
    color: var(--secondary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.stat-card {
    background: rgba(108, 92, 231, 0.1);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    border: 1px solid rgba(108, 92, 231, 0.3);
}

.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--light);
}