/* ===============================================
   CSS Reset and Variables
   =============================================== */
:root {
    --primary-color: #00d4ff;
    --secondary-color: #7c3aed;
    --dark-bg: #0a0e27;
    --darker-bg: #050814;
    --card-bg: #1a1f3a;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #2d3548;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --gradient-1: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-2: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.4);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===============================================
   Utility Classes
   =============================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

/* ===============================================
   Navigation Bar
   =============================================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-normal);
    border-bottom: 1px solid var(--border-color);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.github-link {
    padding: 0.5rem 1rem;
    background: var(--gradient-1);
    border-radius: 6px;
    color: var(--text-primary) !important;
}

.github-icon {
    width: 20px;
    height: 20px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: var(--transition-fast);
}

/* ===============================================
   Hero Section
   =============================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* Animated Stars Background */
.stars,
.stars2,
.stars3 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.stars {
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #eee, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 60px 70px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 50px 50px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 130px 80px, #fff, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 90px 10px, #fff, rgba(0,0,0,0));
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: stars-animate 50s linear infinite;
    opacity: 0.3;
}

.stars2 {
    background-image: 
        radial-gradient(1px 1px at 100px 150px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 200px 50px, #eee, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 50px 100px, #fff, rgba(0,0,0,0));
    background-repeat: repeat;
    background-size: 250px 250px;
    animation: stars-animate 100s linear infinite;
    opacity: 0.2;
}

.stars3 {
    background-image: 
        radial-gradient(1px 1px at 75px 125px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 175px 75px, #eee, rgba(0,0,0,0));
    background-repeat: repeat;
    background-size: 300px 300px;
    animation: stars-animate 150s linear infinite;
    opacity: 0.15;
}

@keyframes stars-animate {
    from {
        transform: translateY(0px);
    }
    to {
        transform: translateY(-200px);
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-style: italic;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

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

/* Animations */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 0.8s ease-out 0.2s backwards;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 0.8s ease-out 0.4s backwards;
}

.animate-fade-in-delay-3 {
    animation: fadeIn 0.8s ease-out 0.6s backwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Satellite Animation */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.satellite-orbit {
    width: 300px;
    height: 300px;
    border: 2px dashed var(--primary-color);
    border-radius: 50%;
    position: relative;
    animation: pulse-orbit 3s ease-in-out infinite;
}

@keyframes pulse-orbit {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.05);
    }
}

.satellite {
    position: absolute;
    top: 50%;
    left: 50%;
    font-size: 3rem;
    animation: orbit 10s linear infinite;
    transform-origin: -150px center;
}

@keyframes orbit {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ===============================================
   Buttons
   =============================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-fast);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-icon {
    width: 16px;
    height: 16px;
}

/* ===============================================
   Features Section
   =============================================== */
.features {
    padding: 6rem 0;
    background-color: var(--darker-bg);
}

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

.feature-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===============================================
   Getting Started Section
   =============================================== */
.getting-started {
    padding: 6rem 0;
    background-color: var(--dark-bg);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step-content {
    flex: 1;
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.step-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.code-block {
    position: relative;
    background-color: var(--darker-bg);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 0.75rem;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.code-block code {
    font-family: 'Consolas', 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--primary-color);
    flex: 1;
}

.copy-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
}

.copy-btn:hover {
    background-color: var(--card-bg);
    color: var(--primary-color);
}

/* ===============================================
   Documentation Section
   =============================================== */
.documentation {
    padding: 6rem 0;
    background-color: var(--darker-bg);
}

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

.doc-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.doc-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.doc-icon {
    font-size: 2.5rem;
}

.doc-card h3 {
    font-size: 1.3rem;
}

.doc-card p {
    color: var(--text-secondary);
    flex: 1;
}

.doc-arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
    align-self: flex-end;
}

/* ===============================================
   Contribute Section
   =============================================== */
.contribute {
    padding: 6rem 0;
    background-color: var(--dark-bg);
}

.contribute-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contribute-info h3,
.contribute-actions h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.contribute-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contribute-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.list-icon {
    font-size: 1.5rem;
}

.contribute-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.contribute-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.contribute-card:hover {
    border-color: var(--primary-color);
}

.contribute-card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.contribute-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contribute-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ===============================================
   Legal Notice Section
   =============================================== */
.legal-notice {
    padding: 4rem 0;
    background-color: var(--darker-bg);
}

.notice-card {
    background-color: rgba(245, 158, 11, 0.1);
    border: 2px solid var(--warning-color);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.notice-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.notice-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--warning-color);
}

.notice-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===============================================
   Footer
   =============================================== */
.footer {
    background-color: var(--darker-bg);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

.footer-motto {
    margin-top: 0.5rem;
    font-style: italic;
    color: var(--text-secondary);
}

/* ===============================================
   Responsive Design
   =============================================== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        order: -1;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .satellite-orbit {
        width: 200px;
        height: 200px;
    }

    .satellite {
        font-size: 2rem;
        transform-origin: -100px center;
    }

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

    .contribute-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

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

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(10px);
        padding: 2rem;
        gap: 1.5rem;
        transition: var(--transition-normal);
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .github-link {
        width: 100%;
        justify-content: center;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2rem;
    }

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

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

    .contribute-cards {
        grid-template-columns: 1fr;
    }

    .step {
        flex-direction: column;
        gap: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .code-block {
        flex-direction: column;
        align-items: flex-start;
    }

    .code-block code {
        font-size: 0.8rem;
        word-break: break-all;
    }
}