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

:root {
    /* macOS-inspired colors */
    --primary-blue: #007AFF;
    --primary-blue-hover: #0051D5;
    --dark-bg: #1C1C1E;
    --light-bg: #F2F2F7;
    --card-bg: #FFFFFF;
    --text-primary: #000000;
    --text-secondary: #6E6E73;
    --border-color: #D1D1D6;
    --success-green: #34C759;
    --gradient-start: #007AFF;
    --gradient-end: #5856D6;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(113, 35, 196, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
}

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

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

.logo {
    width: 40px;
    height: 40px;
}

.app-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
}

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

.nav-links a {
    text-decoration: none;
    color: white;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: rgba(255, 255, 255, 0.7);
}

.cta-button {
    background: white;
    color: var(--gradient-end) !important;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    padding-top: 80px;
}

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

.hero-text h1 {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.description {
    font-size: 1.125rem;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

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

.primary-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.3s ease;
}

.primary-button {
    background: white;
    color: var(--primary-blue);
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.secondary-button {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
}

.secondary-button:hover {
    background: rgba(255, 255, 255, 0.3);
}

.apple-icon {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor"><path d="M17.05 20.28c-.98.95-2.05.8-3.08.35-1.09-.46-2.09-.48-3.24 0-1.44.62-2.2.44-3.06-.35C2.79 15.25 3.51 7.59 9.05 7.31c1.35.07 2.29.74 3.08.8 1.18-.24 2.31-.93 3.57-.84 1.51.12 2.65.72 3.4 1.8-3.12 1.87-2.38 5.98.48 7.13-.57 1.5-1.31 2.99-2.54 4.09l.01-.01zM12.03 7.25c-.15-2.23 1.66-4.07 3.74-4.25.29 2.58-2.34 4.5-3.74 4.25z"/></svg>');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

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

.app-icon-large {
    width: 100%;
    max-width: 400px;
    height: auto;
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

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

/* Problem/Solution Section */
.problem-solution {
    padding: var(--spacing-xl) 0;
    background: var(--light-bg);
    text-align: center;
}

.problem-solution h2 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.section-intro {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Features Section */
.features {
    padding: var(--spacing-xl) 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

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

.feature-card {
    background: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

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

/* How It Works Section */
.how-it-works {
    padding: var(--spacing-xl) 0;
    background: var(--light-bg);
}

.how-it-works h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.step {
    background: white;
    padding: var(--spacing-md);
    border-radius: 16px;
    text-align: center;
    flex: 1;
    min-width: 250px;
    max-width: 300px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
}

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

.step p {
    color: var(--text-secondary);
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary-blue);
}

/* Target Audience Section */
.target-audience {
    padding: var(--spacing-xl) 0;
    background: white;
}

.target-audience h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

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

.audience-card {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.audience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.audience-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.audience-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Categories Section */
.categories {
    padding: var(--spacing-xl) 0;
    background: var(--light-bg);
}

.categories h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.category-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.category-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-3px);
}

.category-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-blue);
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-xl) 0;
    background: white;
}

.benefits h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.benefits-list {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: var(--spacing-md);
}

.benefit {
    padding: var(--spacing-md);
    background: var(--light-bg);
    border-radius: 12px;
}

.benefit-text h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.benefit-text p {
    color: var(--text-secondary);
}

/* Download Section */
.download {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
}

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

.download-icon {
    width: 150px;
    height: 150px;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
}

.download h2 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.download-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.download-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    color: var(--primary-blue);
    padding: 1.25rem 3rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.25rem;
    transition: all 0.3s ease;
    margin-bottom: var(--spacing-sm);
}

.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.download-note {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: var(--spacing-sm);
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    margin: var(--spacing-xs) 0;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding: var(--spacing-md);
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.25rem;
    }

    .description {
        font-size: 1rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .app-icon-large {
        max-width: 250px;
    }

    .features h2,
    .how-it-works h2,
    .target-audience h2,
    .categories h2,
    .benefits h2,
    .download h2,
    .problem-solution h2 {
        font-size: 2rem;
    }

    .step-arrow {
        display: none;
    }

    .nav-links {
        gap: var(--spacing-sm);
    }

    .nav-links a {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }

    .primary-button,
    .secondary-button {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }

    .feature-card,
    .category-card,
    .step {
        min-width: 100%;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

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