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

:root {
    --primary-color: #4CAF50;
    --primary-dark: #388E3C;
    --primary-light: #66BB6A;
    --secondary-color: #2196F3;
    --accent-color: #FF9800;
    --danger-color: #F44336;
    --dark-bg: #1a1a1a;
    --dark-card: #2d2d2d;
    --text-primary: #333;
    --text-secondary: #666;
    --text-light: #999;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: #f5f5f5;
}

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

/* Header */
.header {
    background: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.6s ease-out;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.feature-badge {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
}

.download-btn {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out 0.6s both;
    text-decoration: none;
    text-align: center;
    justify-content: center;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
    background: #f8f8f8;
}

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

.download-btn svg {
    width: 24px;
    height: 24px;
    animation: bounce 2s infinite;
}

.version-info {
    margin-top: 1.5rem;
    opacity: 0.9;
    font-size: 0.95rem;
    animation: fadeInUp 0.6s ease-out 0.8s both;
}

/* Warning Section */
.warning {
    padding: 2rem 0;
}

.warning-box {
    background: #FFF3E0;
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow);
}

.warning-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.warning-text {
    color: var(--text-primary);
}

/* Video Section */
.video-section {
    padding: 4rem 0;
    background: white;
}

.video-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.video-container {
    max-width: 900px;
    margin: 0 auto 2rem;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.video-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.video-placeholder p {
    margin-top: 1rem;
    font-size: 1.2rem;
}

.video-hint {
    font-size: 0.9rem !important;
    opacity: 0.8;
}

.video-container iframe,
.video-container video {
    width: 100%;
    height: 100%;
    border: none;
}


/* Description Section */
.description {
    padding: 4rem 0;
    background: #fafafa;
}

.description h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.text-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.05rem;
    color: var(--text-secondary);
}

.screenshot-container {
    background: white;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.screenshot-container img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.screenshot-caption {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Features Section */
.features {
    padding: 4rem 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: #f9f9f9;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.25rem;
}

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

.screenshot-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.screenshot-item {
    background: white;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.screenshot-item img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 1rem;
}

/* Specifications Section */
.specifications {
    padding: 4rem 0;
    background: #fafafa;
}

.specifications h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.specs-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.specs-list {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-label {
    font-weight: 600;
    color: var(--text-primary);
}

.spec-value {
    color: var(--primary-color);
    font-weight: 500;
}

.specs-features {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.specs-features h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.specs-features ul {
    list-style: none;
}

.specs-features li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* Pros and Cons Section */
.pros-cons {
    padding: 4rem 0;
    background: white;
}

.pros-cons h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.pros-cons-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.pros-box, .cons-box {
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.pros-box {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.cons-box {
    background: linear-gradient(135deg, #FFEBEE 0%, #FFCDD2 100%);
}

.pros-box h3, .cons-box h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.pros-box ul, .cons-box ul {
    list-style: none;
}

.pros-box li, .cons-box li {
    padding: 0.5rem 0 0.5rem 1.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.pros-box li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.cons-box li:before {
    content: "✗";
    position: absolute;
    left: 0;
    color: var(--danger-color);
    font-weight: bold;
}

/* Guide Section */
.guide {
    padding: 4rem 0;
    background: #fafafa;
}

.guide h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.steps {
    max-width: 900px;
    margin: 0 auto 3rem;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.step:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step-content h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.4rem;
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.step-content ul {
    margin-left: 1.5rem;
    color: var(--text-secondary);
}

.step-content li {
    margin: 0.5rem 0;
    line-height: 1.6;
}

.download-section {
    text-align: center;
    margin-top: 3rem;
}

.download-btn-secondary {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
    justify-content: center;
}

.download-btn-secondary:hover {
    background: #1976D2;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(33, 150, 243, 0.4);
}

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

.download-btn-secondary svg {
    width: 24px;
    height: 24px;
}

/* FAQ Section */
.faq {
    padding: 4rem 0;
    background: white;
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: #f9f9f9;
    margin-bottom: 1rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.3s;
}

.faq-question:hover {
    background: #f0f0f0;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--primary-light);
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.6;
}

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

.footer-section li {
    margin: 0.5rem 0;
}

.footer-section a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-section a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    opacity: 0.7;
}

.footer-bottom p {
    margin: 0.5rem 0;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .nav {
        gap: 1rem;
        font-size: 0.9rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .content-grid,
    .specs-container,
    .pros-cons-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshot-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-badge {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    .download-btn,
    .download-btn-secondary {
        width: 100%;
        max-width: 400px;
        justify-content: center;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        flex-direction: column;
    }
}