/* ==========================================
   SouvenirBird Landing Page Styles
   ==========================================
   Minimalist, warm, calm design
   Mint accents, plenty of whitespace
   ========================================== */

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

:root {
    /* Color Palette */
    --mint-primary: #7EC4A8;
    --mint-light: #B8E6D5;
    --mint-bg: #F5FDFB;
    --mint-bg-darker: #E8F7F3;
    --gray-dark: #2C3E50;
    --gray-medium: #5A6C7D;
    --gray-light: #E8ECEF;
    --white: #FFFFFF;
    
    /* Typography */
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Helvetica Neue', Arial, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 3.5rem;
    --space-xxl: 5rem;
    
    /* Container */
    --container-max: 1200px;
}

/* Typography */
body {
    font-family: var(--font-main);
    font-size: 18px;
    line-height: 1.7;
    color: var(--gray-dark);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--gray-dark);
}

h1 {
    font-size: 3.8rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: var(--space-sm);
}

/* Layout */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--mint-bg-darker) 0%, var(--mint-bg) 100%);
    padding: var(--space-xl) 0;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-lg);
    align-items: center;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--gray-medium);
    font-weight: 300;
    line-height: 1.7;
    margin-bottom: var(--space-md);
    max-width: 580px;
}

.cta-primary {
    margin-top: var(--space-md);
}

.google-play-button {
    display: inline-block;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.google-play-button:hover {
    transform: translateY(-3px);
    opacity: 0.9;
}

.play-badge {
    height: 60px;
    width: auto;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease-out;
}

.app-preview {
    max-width: 85%;
    height: auto;
    filter: drop-shadow(0 20px 60px rgba(126, 196, 168, 0.15));
    border-radius: 20px;
}

/* Description Section */
.description {
    padding: var(--space-lg) 0;
    background-color: var(--white);
}

.description-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.lead {
    font-size: 1.3rem;
    line-height: 1.8;
    color: var(--gray-medium);
    font-weight: 300;
}

/* Features Section */
.features {
    padding: var(--space-xl) 0;
    background-color: var(--mint-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.feature {
    background: var(--white);
    padding: var(--space-md) var(--space-lg);
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(126, 196, 168, 0.15);
}

.feature-icon {
    margin-bottom: var(--space-sm);
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature h3 {
    color: var(--gray-dark);
    margin-bottom: var(--space-sm);
    font-size: 1.3rem;
}

.feature p {
    color: var(--gray-medium);
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
}

/* Bird Illustration Section */
.bird-section {
    padding: var(--space-md) 0 var(--space-lg) 0;
    background-color: var(--white);
}

.bird-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
}

.bird-img {
    max-width: 280px;
    width: 100%;
    height: auto;
    opacity: 0.7;
}

/* Footer */
.footer {
    background-color: var(--white);
    padding: var(--space-lg) 0 var(--space-md) 0;
    text-align: center;
    border-top: 1px solid var(--gray-light);
}

.footer-tagline {
    font-size: 1.1rem;
    color: var(--mint-primary);
    margin-bottom: var(--space-sm);
    font-style: italic;
    font-weight: 300;
}

.footer-links {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--gray-medium);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.separator {
    margin: 0 var(--space-sm);
    color: var(--gray-light);
}

.footer-copyright {
    font-size: 0.9rem;
    color: var(--gray-light);
    margin: 0;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    :root {
        --space-xl: 2.5rem;
        --space-xxl: 3.5rem;
    }
    
    h1 {
        font-size: 2.8rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-text {
        text-align: center;
    }
    
    .subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: var(--space-md);
    }
}

@media (max-width: 640px) {
    :root {
        --space-lg: 2rem;
        --space-xl: 2rem;
        --space-xxl: 2.5rem;
    }
    
    body {
        font-size: 16px;
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .lead {
        font-size: 1.1rem;
    }
    
    .hero {
        padding: var(--space-md) 0;
        min-height: auto;
    }
    
    .play-badge {
        height: 50px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature {
        padding: var(--space-md);
    }
    
    .bird-img {
        max-width: 220px;
    }
}

/* Accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--mint-primary);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}