/* Dream Collage: Surreal - Landing Page Styles */
/* Ethereal Mysterious | Dreamy Pastels | Elegant Serif */

/* ========== CSS Variables ========== */
:root {
    /* Dreamy Pastel Color Scheme */
    --color-primary: #E8D5F2;
    --color-primary-light: #F5EBFA;
    --color-primary-dark: #D4B8E8;
    --color-secondary: #C5E5F4;
    --color-accent: #F9E5D8;
    --color-glow: #FFFFFF;
    
    /* Neutrals with soft haze */
    --color-background: #FAFBFC;
    --color-surface: #FFFFFF;
    --color-text-primary: #3E3E52;
    --color-text-secondary: #6B6B7E;
    --color-text-muted: #9A9AAD;
    --color-border: rgba(200, 200, 220, 0.3);
    
    /* Gradient overlays */
    --gradient-hero: linear-gradient(135deg, rgba(232, 213, 242, 0.15) 0%, rgba(197, 229, 244, 0.15) 100%);
    --gradient-cta: linear-gradient(135deg, #E8D5F2 0%, #C5E5F4 100%);
    --gradient-glow: radial-gradient(circle, rgba(255, 255, 255, 0.8) 0%, rgba(232, 213, 242, 0.4) 50%, transparent 70%);
    
    /* Typography - Elegant Serif with fallbacks */
    --font-primary: 'Georgia', 'Times New Roman', serif;
    --font-secondary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    
    /* Font sizes - Mobile first (≥14px for body) */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.5rem;       /* 24px */
    --font-size-2xl: 2rem;        /* 32px */
    --font-size-3xl: 2.5rem;      /* 40px */
    --font-size-4xl: 3rem;        /* 48px */
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Layout */
    --container-max: 1200px;
    --header-height-mobile: 48px;
    --header-height-desktop: 64px;
    
    /* Border radius - soft, dreamy */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    /* Shadows - soft glows */
    --shadow-sm: 0 2px 8px rgba(232, 213, 242, 0.15);
    --shadow-md: 0 4px 16px rgba(232, 213, 242, 0.2);
    --shadow-lg: 0 8px 32px rgba(232, 213, 242, 0.25);
    --shadow-glow: 0 0 24px rgba(232, 213, 242, 0.4);
    
    /* Transitions - gentle fade & float */
    --transition-base: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-secondary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-text-primary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-base);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

/* ========== Sticky Header ========== */
.sticky-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height-mobile);
    background: rgba(250, 251, 252, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition-base);
}

.header-container {
    max-width: var(--container-max);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.header-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.header-title {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 400;
    color: var(--color-text-primary);
    display: none;
}

/* Desktop navigation */
.header-nav {
    display: none;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-cta);
    transition: width 0.3s ease;
}

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

.cta-button-header {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-cta);
    color: var(--color-text-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.cta-button-header:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.cta-button-header:active {
    transform: translateY(0);
}

/* Mobile CTA icon */
.mobile-cta-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-cta);
    border-radius: 50%;
    color: var(--color-text-primary);
}

.mobile-cta-icon:active {
    transform: scale(0.95);
}

/* ========== Hero Section ========== */
.hero {
    min-height: 100vh;
    padding: calc(var(--header-height-mobile) + var(--spacing-xl)) var(--spacing-sm) var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: var(--gradient-glow);
    opacity: 0.5;
    animation: float-glow 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float-glow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(10%, 10%) scale(1.1); }
    66% { transform: translate(-10%, 5%) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.hero-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: gentle-float 6s ease-in-out infinite;
}

@keyframes gentle-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.hero-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    animation: fade-in-up 0.8s ease-out;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    animation: fade-in-up 0.8s ease-out 0.2s backwards;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    animation: fade-in-up 0.8s ease-out 0.4s backwards;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    min-height: 56px;
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.download-btn.google-play:hover {
    background: var(--gradient-cta);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.download-btn.google-play:active {
    transform: translateY(-2px);
}

/* App Store Coming Soon Button */
.download-btn.app-store.coming-soon {
    background: #2a2a2a;
    border-color: #444;
    opacity: 0.55;
    filter: grayscale(0.6);
    cursor: not-allowed;
    position: relative;
}

.download-btn.app-store.coming-soon:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
}

.coming-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--color-text-muted);
    color: var(--color-surface);
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-family: var(--font-secondary);
    font-weight: 600;
}

.store-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

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

.btn-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-family: var(--font-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.coming-label {
    font-weight: 600;
}

.btn-store {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: var(--font-secondary);
}

/* Hero visual */
.hero-visual {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 600px;
    margin-top: var(--spacing-xl);
}

.hero-banner {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: fade-in-up 1s ease-out 0.6s backwards;
}

/* ========== Features Section ========== */
.features {
    padding: var(--spacing-2xl) var(--spacing-sm);
    background: var(--color-surface);
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.section-title {
    font-size: var(--font-size-2xl);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.section-subtitle {
    font-size: var(--font-size-base);
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

/* Floating Elements - feature cards */
.feature-card {
    padding: var(--spacing-lg);
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    opacity: 0;
    transition: var(--transition-slow);
}

.feature-card:hover::before {
    opacity: 0.3;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.feature-description {
    font-size: var(--font-size-sm);
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ========== Download CTA Section ========== */
.download-cta {
    padding: var(--spacing-2xl) var(--spacing-sm);
    background: var(--gradient-cta);
    position: relative;
    overflow: hidden;
}

.download-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    opacity: 0.4;
    animation: float-glow 15s ease-in-out infinite;
}

.cta-title {
    font-size: var(--font-size-3xl);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    position: relative;
    z-index: 2;
}

.cta-subtitle {
    font-size: var(--font-size-lg);
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.download-buttons-large {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 400px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.download-btn.large {
    min-height: 64px;
    padding: var(--spacing-md) var(--spacing-xl);
}

/* ========== About Section ========== */
.about {
    padding: var(--spacing-2xl) var(--spacing-sm);
    background: var(--color-surface);
}

.about-text {
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.contact-info {
    text-align: center;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-lg);
}

.email-link {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

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

/* ========== Footer ========== */
.footer {
    padding: var(--spacing-xl) var(--spacing-sm) var(--spacing-lg);
    background: var(--color-text-primary);
    color: var(--color-surface);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.footer-title {
    font-family: var(--font-primary);
    font-size: var(--font-size-lg);
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.footer-link {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: underline;
}

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

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

.footer-email a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: underline;
}

.footer-email a:hover {
    color: var(--color-surface);
}

.footer-copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
}

/* ========== Mobile Sticky CTA ========== */
.mobile-sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-sm);
    background: rgba(250, 251, 252, 0.98);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--color-border);
    z-index: 999;
    transform: translateY(100%);
    transition: var(--transition-base);
}

.mobile-sticky-cta.visible {
    transform: translateY(0);
}

.sticky-download-btn {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-cta);
    color: var(--color-text-primary);
    border-radius: var(--radius-full);
    text-align: center;
    font-weight: 600;
    font-size: var(--font-size-base);
    box-shadow: var(--shadow-md);
    min-height: 48px;
}

.sticky-download-btn:active {
    transform: scale(0.98);
}

/* ========== Responsive - Tablet ========== */
@media (min-width: 768px) {
    .sticky-header {
        height: var(--header-height-desktop);
    }
    
    .header-container {
        padding: 0 var(--spacing-lg);
    }
    
    .header-icon {
        width: 40px;
        height: 40px;
    }
    
    .header-title {
        display: block;
    }
    
    .header-nav {
        display: flex;
    }
    
    .mobile-cta-icon {
        display: none;
    }
    
    .hero {
        padding: calc(var(--header-height-desktop) + var(--spacing-2xl)) var(--spacing-lg) var(--spacing-2xl);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .download-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .cta-title {
        font-size: var(--font-size-4xl);
    }
    
    .download-buttons-large {
        flex-direction: row;
        max-width: 600px;
    }
    
    .mobile-sticky-cta {
        display: none;
    }
}

/* ========== Responsive - Desktop ========== */
@media (min-width: 1024px) {
    .hero {
        flex-direction: row;
        text-align: left;
        gap: var(--spacing-2xl);
    }
    
    .hero-content {
        flex: 1;
        max-width: 500px;
    }
    
    .hero-icon {
        margin: 0 0 var(--spacing-md) 0;
    }
    
    .download-buttons {
        justify-content: flex-start;
    }
    
    .hero-visual {
        flex: 1;
        margin-top: 0;
    }
    
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}