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

:root {
    /* Moon Journal Color Palette - Aurora Borealis Theme */
    --new-moon: #0B1426;
    --waxing-crescent: #1E3A5F;
    --first-quarter: #2E5A8A;
    --waxing-gibbous: #4A7C59;
    --full-moon: #64B5F6;
    --waning-gibbous: #7B68EE;
    --last-quarter: #5D4B7A;
    --waning-crescent: #3F4C6B;
    
    --stardust: #E3F2FD;
    --moonlight: #BBDEFB;
    --cosmic: #42A5F5;
    --nebula: #7C4DFF;
    --aurora: #00BCD4;
    --white-gold: #F5F5DC;
    
    --surface: #1A2332;
    --surface-variant: #263238;
    --background: #0D1117;
    --surface-dim: #1E272E;
    
    --on-surface: #E8F5E8;
    --on-surface-variant: #B0BEC5;
    --on-background: #FFFFFF;
    --on-surface-dim: #90A4AE;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-small: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-large: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(100, 181, 246, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--background);
    color: var(--on-background);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Starry Background */
#starry-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, var(--background) 0%, var(--surface) 100%);
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background-color: var(--stardust);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--stardust);
    animation: twinkle 3s infinite ease-in-out;
}

.star:nth-child(odd) {
    animation-delay: 1s;
}

.star:nth-child(3n) {
    animation-delay: 2s;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--surface-variant);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--on-background);
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--on-surface-variant);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--full-moon);
    transition: width 0.3s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--on-background);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    position: relative;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.hero-content {
    z-index: 2;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.gradient-text {
    background: linear-gradient(135deg, var(--full-moon), var(--aurora), var(--nebula));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--on-surface-variant);
    margin-bottom: var(--spacing-xxl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--full-moon), var(--aurora));
    color: var(--on-background);
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

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

.btn-secondary:hover {
    background: var(--white-gold);
    color: var(--background);
    transform: translateY(-2px);
}

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

.moon-display {
    text-align: center;
}

.moon-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

.moon-wrapper {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    background: radial-gradient(circle, var(--background) 0%, var(--surface) 100%);
    box-shadow: 0 0 30px rgba(100, 181, 246, 0.3);
}

.moon-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.moon-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(100, 181, 246, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.moon-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--full-moon);
    margin-bottom: var(--spacing-xs);
}

.moon-info p {
    color: var(--on-surface-variant);
    font-size: 1rem;
}

/* Features Section */
.features {
    padding: var(--spacing-xxl) 0;
    background: rgba(26, 35, 50, 0.3);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--on-background);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--on-surface-variant);
    max-width: 600px;
    margin: 0 auto;
}

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

.feature-card {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--white-gold);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--full-moon), var(--aurora));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--on-background);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--on-background);
}

.feature-description {
    color: var(--on-surface-variant);
    line-height: 1.6;
}

/* Moon Phases Section */
.moon-phases {
    padding: var(--spacing-xxl) 0;
}

.moon-phases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.moon-phase-card {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--white-gold);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.moon-phase-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-large);
    border-color: var(--full-moon);
}

.moon-phase-image {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
}

.moon-phase-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    background: radial-gradient(circle, var(--background) 0%, var(--surface) 100%);
    box-shadow: 0 0 15px rgba(100, 181, 246, 0.2);
}

.moon-phase-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    display: block;
}

.moon-phase-card:hover .moon-phase-image img {
    transform: scale(1.1);
}

.moon-phase-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--on-background);
}

.moon-phase-description {
    color: var(--on-surface-variant);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Screenshots Section */
.screenshots {
    padding: var(--spacing-xxl) 0;
    background: rgba(26, 35, 50, 0.3);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.screenshot-card {
    text-align: center;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.screenshot-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
    color: var(--on-background);
}

.screenshot-description {
    color: var(--on-surface-variant);
    font-size: 0.9rem;
    line-height: 1.5;
    text-align: center;
    margin: 0;
}

/* Download Section */
.download {
    padding: var(--spacing-xxl) 0;
    background: rgba(26, 35, 50, 0.3);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.download-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--on-background);
}

.download-subtitle {
    font-size: 1.25rem;
    color: var(--on-surface-variant);
    margin-bottom: var(--spacing-xxl);
    line-height: 1.6;
}

.download-buttons {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--white-gold);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.3s ease;
    opacity: 0.6;
    cursor: not-allowed;
}

.download-btn:not([disabled]):hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    border-color: var(--full-moon);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-label {
    font-size: 0.75rem;
    color: var(--on-surface-variant);
}

.btn-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--on-background);
}

.coming-soon {
    color: var(--aurora);
    font-weight: 600;
    font-style: italic;
}

.download-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.large-logo {
    display: flex;
    justify-content: center;
    align-items: center;
}

.download-logo {
    width: 400px;
    height: 400px;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.download-logo:hover {
    opacity: 1;
    transform: scale(1.05);
}

.phone-mockup {
    width: 200px;
    height: 400px;
    background: linear-gradient(135deg, var(--surface), var(--surface-variant));
    border-radius: 30px;
    padding: 20px;
    box-shadow: var(--shadow-large);
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--background);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.phone-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="1" fill="%23E3F2FD" opacity="0.6"/><circle cx="80" cy="30" r="1" fill="%23E3F2FD" opacity="0.4"/><circle cx="30" cy="70" r="1" fill="%23E3F2FD" opacity="0.8"/><circle cx="70" cy="80" r="1" fill="%23E3F2FD" opacity="0.5"/></svg>');
    opacity: 0.3;
}

.mockup-logo {
    width: 40px;
    height: 40px;
    z-index: 1;
}

.mockup-moon {
    z-index: 1;
    display: flex;
    justify-content: center;
}

.mockup-moon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    background: radial-gradient(circle, var(--background) 0%, var(--surface) 100%);
    box-shadow: 0 0 15px rgba(100, 181, 246, 0.2);
}

.mockup-moon-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.mockup-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    display: block;
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.5);
    border-top: 1px solid var(--surface-variant);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.footer-logo-img {
    width: 32px;
    height: 32px;
}

.footer-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--on-background);
}

.footer-description {
    color: var(--on-surface-variant);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-link {
    color: var(--on-surface-variant);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--full-moon);
}

.footer-bottom {
    border-top: 1px solid var(--surface-variant);
    padding-top: var(--spacing-lg);
}

.footer-bottom p {
    color: var(--on-surface-dim);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .moon-phases-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .download-buttons {
        justify-content: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Scroll animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Moon images are now handled by wrapper divs */