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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #1d1d1f;
    background-color: #ffffff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hidden utility class */
.hidden {
    display: none !important;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo .logo {
    height: 30px;
    width: auto;
}

.logo-text {
    font-weight: 600;
    font-size: 18px;
    color: #1d1d1f;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: #1d1d1f;
    font-weight: 400;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #007aff;
}

/* Volume Control */
.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volume-icon {
    font-size: 1.2rem;
}

.volume-slider {
    width: 80px;
    height: 4px;
    background: #ddd;
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: #007aff;
    border-radius: 50%;
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: #007aff;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Start Screen */
.start-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    position: relative;
    z-index: 100;
    overflow: hidden;
    background: #FFFFFF;
}

.main-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    z-index: 1;
    transform: scale(0.8);
    transform-origin: center;
}

.start-content {
    text-align: center;
    color: white;
    animation: fadeInUp 1s ease-out;
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    transition: opacity 0.3s ease;
}

.start-logo {
    height: 120px;
    width: auto;
    margin-bottom: 30px;
    animation: pulse 2s infinite;
}

.start-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1d1d1f;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.start-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 40px;
    color: #6e6e73;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.continue-btn {
    padding: 15px 40px;
    font-size: 1.2rem;
    font-weight: 500;
    color: #000000;
    background: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.continue-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    background: #f8f8f8;
}



/* Main Content */
.main-content {
    padding-top: 60px;
}

/* Hero Section */
.hero {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.hero-logo {
    height: 80px;
    width: auto;
    margin-bottom: 30px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #000000;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #6e6e73;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 500;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.buy-link {
    text-decoration: none;
    color: inherit;
}

.btn-primary {
    background: #007aff;
    color: white;
}

.btn-primary:hover {
    background: #0056cc;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 122, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #007aff;
    border: 2px solid #007aff;
}

.btn-secondary:hover {
    background: #007aff;
    color: white;
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.3rem;
    color: #6e6e73;
    text-align: center;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 80px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: 20px;
    background: white;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.feature-image {
    margin-bottom: 30px;
}

.feature-icon {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin: 0 auto;
    display: block;
}

.image-placeholder {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 0.9rem;
    color: white;
    font-weight: 600;
    text-align: center;
    padding: 5px;
}

.image-placeholder.large {
    width: 100%;
    height: 300px;
    border-radius: 20px;
    flex-direction: column;
    gap: 20px;
    font-size: 3rem;
}

.feature-image-large {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.feature-video-large {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.image-placeholder p {
    color: white;
    font-weight: 500;
    margin: 0;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.feature-card p {
    color: #6e6e73;
    line-height: 1.6;
}

/* Feature Showcase */
.feature-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-top: 80px;
}

.feature-showcase.reverse {
    grid-template-columns: 1fr 1fr;
}

.feature-showcase.reverse .feature-visual {
    order: -1;
}

.feature-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
}

.feature-content p {
    font-size: 1.2rem;
    color: #6e6e73;
    margin-bottom: 30px;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
    margin-bottom: 40px;
}

.feature-list li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: #6e6e73;
    font-size: 1.1rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #007aff;
    font-weight: bold;
}

/* Stats */
.stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #007aff;
    margin-bottom: 5px;
}

.stat p {
    color: #6e6e73;
    font-size: 1rem;
}

/* Download Section */
.download {
    background: #f5f7fa;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.download-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    position: relative;
}

.download-card.featured {
    transform: scale(1.05);
    border: 3px solid #007aff;
}

.download-card.featured::before {
    content: 'Most Popular';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #007aff;
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.download-card:hover {
    transform: translateY(-5px);
}

.download-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.download-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: #007aff;
    margin-bottom: 30px;
}

.price-crossed {
    font-size: 3rem;
    font-weight: 700;
    color: #999;
    margin-bottom: 10px;
    text-decoration: line-through;
    position: relative;
}

.included-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: #007aff;
    margin-bottom: 20px;
    text-transform: lowercase;
}

.download-card ul {
    list-style: none;
    margin-bottom: 40px;
}

.download-card li {
    padding: 8px 0;
    color: #6e6e73;
}

/* Footer */
.footer {
    background: #1d1d1f;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-logo .logo {
    height: 40px;
    width: auto;
}

.footer-logo span {
    font-size: 1.5rem;
    font-weight: 600;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.link-group h4 {
    font-weight: 600;
    margin-bottom: 20px;
    color: #f5f5f7;
}

.link-group a {
    display: block;
    color: #a1a1a6;
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #424245;
    color: #a1a1a6;
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

@keyframes scaleIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .start-title {
        font-size: 2.5rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-showcase {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .feature-showcase.reverse .feature-visual {
        order: 0;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .download-options {
        grid-template-columns: 1fr;
    }
    
    .download-card.featured {
        transform: none;
    }
    
    .download-card.featured:hover {
        transform: translateY(-5px);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .start-title {
        font-size: 2rem;
    }
    
    .start-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
}