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

:root {
    /* Clean Minimal Color Scheme */
    --primary-color: #5d4be3;
    --primary-dark: #4a3bb8;
    --accent-color: #5d4be3;
    --success-color: #10B981;
    
    --background: #FFFFFF;
    --background-alt: #F9FAFB;
    --background-section: #F9FAFB;
    
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    
    --border-light: #E5E7EB;
    --border-medium: #D1D5DB;
    
    /* Gradients */
    --gradient-primary: #5d4be3;
    --gradient-hero: linear-gradient(180deg, #FFFFFF 0%, #F9FAFB 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 72px;
}

/* ===================================
   Container & Layout
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================================
   Navigation Bar
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    padding: 12px 0;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-link {
    display: inline-block;
    line-height: 0;
}

.logo {
    height: 48px;
    width: auto;
    display: block;
    border-radius: 8px;
    transition: transform 0.2s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-muted) !important;
    text-decoration: none !important;
    transition: color 0.2s ease;
    padding: 8px 16px;
}

.nav-link:hover {
    color: var(--text-secondary) !important;
    text-decoration: none !important;
}

/* ===================================
   Hero Section
   =================================== */
.hero-section {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: 80px 0;
    background: var(--gradient-hero);
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: clamp(1.25rem, 3vw, 1.875rem);
    font-weight: 600;
    color: #000000;
    margin-bottom: 20px;
    line-height: 1.3;
}

.subtext {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
    max-width: 600px;
}

.download-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.store-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: #000000;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    color: white;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'SF Pro Display', sans-serif;
    font-weight: 500;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
    transition: all 0.15s ease;
    min-height: 44px;
}

.store-badge:hover {
    background: #1a1a1a;
}

.store-badge svg {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    max-width: 100%;
    height: auto;
    max-height: 600px;
    animation: float 6s ease-in-out infinite;
}

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

/* ===================================
   Features Section
   =================================== */
.features-section {
    padding: 100px 0;
    background: var(--background-section);
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.feature-card {
    text-align: center;
    padding: 48px 32px;
    border-radius: 16px;
    background: white;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    height: 100%;
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(93, 75, 227, 0.08);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===================================
   Screenshots Section
   =================================== */
.screenshots-section {
    padding: 100px 0;
    background: white;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 64px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.screenshot {
    width: 100%;
    height: auto;
    border-radius: 16px;
    background: white;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

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

/* ===================================
   Reviews Section
   =================================== */
.reviews-section {
    padding: 120px 0;
    background: transparent;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 64px;
}

.review-card {
    background: white;
    border: 1px solid var(--border-light);
    padding: 32px;
    border-radius: 16px;
    transition: all 0.3s ease;
}

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

.stars {
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.review-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.review-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===================================
   Privacy Page
   =================================== */
.privacy-page {
    padding: 100px 0;
    background: var(--background);
    min-height: calc(100vh - 72px);
}

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

.privacy-content h1 {
    font-size: clamp(2.5rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.updated-date {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin-bottom: 48px;
}

.privacy-section {
    margin-bottom: 48px;
}

.privacy-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    margin-top: 32px;
}

.privacy-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    margin-top: 24px;
}

.privacy-section p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.privacy-section ul {
    margin-left: 24px;
    margin-bottom: 16px;
}

.privacy-section li {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.privacy-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 48px;
    align-items: center;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.footer-brand p {
    font-size: 0.875rem;
    color: #999;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: #ffffff;
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.3s ease;
}

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

.footer-download {
    display: flex;
    gap: 12px;
}

.store-badge-small img {
    height: 40px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.store-badge-small:hover img {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* ===================================
   Animation Classes
   =================================== */
.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease-out forwards;
}

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }

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

.scroll-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Responsive Design - Tablet
   =================================== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-text {
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.5rem;
    }
    
    .download-buttons {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 32px;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-download {
        justify-content: center;
    }
}
/* ===================================
   Responsive Design - Mobile
   =================================== */
@media (max-width: 640px) {
    body {
        padding-top: 60px;
    }
    
    .navbar {
        padding: 8px 0;
    }
    
    .logo {
        height: 40px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .hero-section {
        padding: 60px 0;
    }
    
    .privacy-page {
        padding: 60px 0;
    }
    
    .privacy-content h1 {
        font-size: 2rem;
    }
    
    .privacy-section h2 {
        font-size: 1.5rem;
    }
    
    .privacy-section h3 {
        font-size: 1.125rem;
    }
    
    .privacy-section p,
    .privacy-section li {
        font-size: 1rem;
    }
    
    .store-badge {
        width: auto;
        justify-content: center;
        height: auto;
    }

    .store-badge img {
        width: 100%;
        max-width: 200px;
        height: auto;
    }
}