/* Quantum Engine Website Styles */

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

:root {
    --primary: #0078d4;
    --secondary: #00d4ff;
    --dark: #0d0d0d;
    --dark-2: #1a1a1a;
    --dark-3: #252526;
    --text: #e0e0e0;
    --text-dim: #999;
    --border: #2a2a2a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    z-index: 1000;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
}

.logo {
    width: 28px;
    height: 28px;
    color: var(--secondary);
}

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

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

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

.hero-title {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-dim);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.version-info {
    font-size: 14px;
    color: var(--text-dim);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: #006cbe;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 120, 212, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--secondary);
    color: var(--secondary);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}

/* App Preview */
.app-preview {
    perspective: 1000px;
}

.app-window {
    background: var(--dark-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s;
}

.app-window:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.window-controls {
    display: flex;
    gap: 8px;
    padding: 16px;
    background: var(--dark-3);
    border-bottom: 1px solid var(--border);
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border);
}

.window-content {
    padding: 24px;
    min-height: 300px;
}

.chat-demo {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    max-width: 80%;
    animation: slideIn 0.3s ease;
}

.message.user {
    background: var(--primary);
    color: #fff;
    margin-left: auto;
}

.message.assistant {
    background: var(--dark-3);
    color: var(--text);
}

.status {
    font-size: 13px;
    color: var(--text-dim);
    padding: 8px 0;
    animation: fadeIn 0.5s ease;
}

.status.completed {
    color: var(--secondary);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Sections */
.section-title {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-dim);
    text-align: center;
    margin-bottom: 60px;
}

/* Features */
.features {
    padding: 100px 0;
    background: var(--dark-2);
}

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

.feature-card {
    background: var(--dark-3);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(0, 120, 212, 0.2), rgba(0, 212, 255, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--secondary);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.6;
}

/* Pricing */
.pricing {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.pricing-card {
    background: var(--dark-2);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    position: relative;
    transition: all 0.3s;
}

.pricing-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.pricing-card.featured {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 120, 212, 0.1), transparent);
}

.popular-badge,
.best-value {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--primary);
    color: #fff;
    font-size: 10px;
    font-weight: bold;
    padding: 6px 12px;
    border-radius: 12px;
    letter-spacing: 0.5px;
}

.best-value {
    background: #ff6b6b;
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.price {
    font-size: 42px;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 24px;
}

.price span {
    font-size: 16px;
    color: var(--text-dim);
    font-weight: normal;
}

.pricing-features {
    list-style: none;
    margin-bottom: 24px;
}

.pricing-features li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.api-key-notice {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.api-key-notice svg {
    width: 24px;
    height: 24px;
    color: var(--secondary);
    flex-shrink: 0;
}

.api-key-notice p {
    margin: 0;
    color: var(--secondary);
    font-size: 14px;
}

/* Download */
.download {
    padding: 100px 0;
    background: var(--dark-2);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 48px;
}

.download-card {
    background: var(--dark-3);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 48px 40px;
    text-align: center;
    transition: all 0.3s;
}

.download-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.platform-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(0, 120, 212, 0.2), rgba(0, 212, 255, 0.2));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.platform-icon svg {
    width: 40px;
    height: 40px;
    color: var(--secondary);
}

.download-card h3 {
    font-size: 28px;
    margin-bottom: 8px;
}

.platform-version {
    color: var(--text-dim);
    font-size: 14px;
    margin-bottom: 24px;
}

.download-btn {
    width: 100%;
    justify-content: center;
    margin-bottom: 12px;
}

.download-size {
    color: var(--text-dim);
    font-size: 13px;
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-dim);
    font-size: 14px;
}

.info-item svg {
    width: 20px;
    height: 20px;
    color: var(--secondary);
}

/* Footer */
.footer {
    padding: 60px 0 40px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
}

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

.footer-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}