/* ===================================
   Jewel Storm: Gem Pulse - Main Styles
   Brand Tone: Tranquil Harmony
   Color Scheme: Soft Gemstone Pastels
   =================================== */

/* --- CSS Variables --- */
:root {
    /* Soft Gemstone Pastels Color Palette */
    --color-primary: #9FC5E8;        /* Soft sky blue */
    --color-primary-light: #CFE2F3;  /* Pale blue */
    --color-primary-dark: #6FA8DC;   /* Medium blue */
    --color-secondary: #B4A7D6;      /* Soft lavender */
    --color-accent: #F9CB9C;         /* Soft peach */
    --color-accent-secondary: #A4C2A5; /* Soft sage green */
    --color-bg: #FDFEFE;             /* Almost white */
    --color-bg-alt: #F4F9FC;         /* Very light blue-white */
    --color-text: #37474F;           /* Dark blue-gray */
    --color-text-light: #607D8B;     /* Medium blue-gray */
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 64px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 50px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(55, 71, 79, 0.08);
    --shadow-md: 0 4px 16px rgba(55, 71, 79, 0.12);
    --shadow-lg: 0 8px 32px rgba(55, 71, 79, 0.16);
    
    /* Transitions */
    --transition-base: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover,
a:focus {
    color: var(--color-primary);
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    background-color: rgba(253, 254, 254, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.header-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
}

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

.header-nav {
    display: none;
}

.header-nav a {
    font-size: var(--font-size-small);
    font-weight: 500;
    color: var(--color-text-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-base), color var(--transition-base);
}

.header-nav a:hover,
.header-nav a:focus {
    background-color: var(--color-bg-alt);
    color: var(--color-text);
}

.header-cta {
    display: none;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    font-size: var(--font-size-small);
    font-weight: 600;
    border-radius: var(--radius-pill);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.header-cta:hover,
.header-cta:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.header-cta-mobile {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: 50%;
    transition: transform var(--transition-base);
}

.header-cta-mobile:hover,
.header-cta-mobile:active {
    transform: scale(1.05);
    color: white;
}

/* --- Hero Section --- */
.hero {
    padding: 80px var(--spacing-sm) var(--spacing-xl);
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.hero-text {
    text-align: center;
}

.hero-icon {
    width: 96px;
    height: 96px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: gentleFloat 3s ease-in-out infinite;
}

.hero-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto var(--spacing-lg);
}

.hero-visual {
    position: relative;
}

.hero-banner {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* --- Download Buttons --- */
.download-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
    margin: 0 auto;
}

.download-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    min-height: 56px;
}

.download-button:hover,
.download-button:focus {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.download-button:active {
    transform: translateY(-1px);
}

.store-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.button-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.button-label {
    font-size: 10px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.9;
}

.button-store {
    font-size: 16px;
    font-weight: 700;
}

/* App Store Coming Soon Styles */
.download-button.coming-soon {
    background: #2a2a2a;
    opacity: 0.55;
    filter: grayscale(0.6);
    cursor: not-allowed;
}

.download-button.coming-soon:hover,
.download-button.coming-soon:focus {
    transform: none;
    box-shadow: none;
}

.coming-soon-label {
    font-size: 12px;
}

.coming-soon-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--color-accent);
    color: var(--color-text);
    font-size: 10px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.features-content {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

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

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

.feature-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.feature-description {
    font-size: var(--font-size-small);
    color: var(--color-text-light);
    line-height: 1.6;
}

/* --- Screenshots Section --- */
.screenshots {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.screenshots-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.screenshots-carousel {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    padding: var(--spacing-md) 0;
    margin: 0 calc(-1 * var(--spacing-sm));
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
}

.screenshots-carousel::-webkit-scrollbar {
    height: 8px;
}

.screenshots-carousel::-webkit-scrollbar-track {
    background: var(--color-bg-alt);
    border-radius: 4px;
}

.screenshots-carousel::-webkit-scrollbar-thumb {
    background: var(--color-primary-light);
    border-radius: 4px;
}

.screenshots-carousel::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

.screenshot-image {
    flex: 0 0 280px;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    scroll-snap-align: start;
    transition: transform var(--transition-base);
}

.screenshot-image:hover {
    transform: scale(1.02);
}

/* --- Download CTA Section --- */
.download-cta {
    padding: var(--spacing-xl) var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    text-align: center;
}

.download-cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.download-cta-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.download-cta-subtitle {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.download-buttons-large .download-button {
    padding: 16px 32px;
    min-height: 64px;
}

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

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    margin-bottom: var(--spacing-lg);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 1.8;
}

.contact-info {
    background: var(--color-bg-alt);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.contact-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.contact-email {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.contact-email svg {
    color: var(--color-primary);
}

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

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

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

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

.footer-name {
    font-size: var(--font-size-large);
    font-weight: 600;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-small);
    transition: color var(--transition-base);
}

.footer-links a:hover,
.footer-links a:focus {
    color: white;
}

.footer-contact {
    margin-bottom: var(--spacing-md);
}

.footer-contact p {
    font-size: var(--font-size-small);
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact a:hover,
.footer-contact a:focus {
    color: white;
}

.footer-copyright {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright p {
    font-size: var(--font-size-small);
    color: rgba(255, 255, 255, 0.6);
}

/* --- Sticky Mobile CTA --- */
.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-sm);
    background: rgba(253, 254, 254, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 -4px 16px rgba(55, 71, 79, 0.12);
    z-index: 99;
    opacity: 0;
    transform: translateY(100%);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.sticky-cta.visible {
    opacity: 1;
    transform: translateY(0);
}

.sticky-cta-button {
    display: block;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-pill);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.sticky-cta-button:hover,
.sticky-cta-button:active {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* --- Animations --- */
@keyframes gentleFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

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

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

/* --- Responsive Design --- */
@media (min-width: 768px) {
    .header {
        height: 64px;
    }
    
    .header-title {
        font-size: var(--font-size-large);
    }
    
    .header-nav {
        display: flex;
        gap: var(--spacing-xs);
    }
    
    .header-cta {
        display: block;
    }
    
    .header-cta-mobile {
        display: none;
    }
    
    .hero {
        padding: 120px var(--spacing-md) var(--spacing-xl);
    }
    
    .hero-content {
        flex-direction: row;
        align-items: center;
    }
    
    .hero-text {
        flex: 1;
        text-align: left;
    }
    
    .hero-icon {
        width: 120px;
        height: 120px;
        margin: 0 0 var(--spacing-md) 0;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 24px;
    }
    
    .hero-description {
        margin: 0 0 var(--spacing-lg) 0;
    }
    
    .hero-visual {
        flex: 1;
    }
    
    .download-buttons {
        flex-direction: row;
        margin: 0;
        max-width: none;
    }
    
    .download-button {
        flex: 1;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .screenshot-image {
        flex: 0 0 360px;
    }
    
    .sticky-cta {
        display: none;
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .screenshot-image {
        flex: 0 0 400px;
    }
    
    .section-title {
        font-size: 36px;
    }
}