/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: #0a0a0a;
    color: #f8f9fa;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(119, 198, 255, 0.06) 0%, transparent 50%);
    z-index: -1;
    animation: drift 20s ease-in-out infinite;
}

@keyframes drift {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

/* Header */
header {
    position: relative;
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, rgba(26, 27, 38, 0.6) 0%, rgba(15, 15, 23, 0.8) 100%);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    animation: glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    from { filter: drop-shadow(0 0 15px rgba(102, 126, 234, 0.3)); }
    to { filter: drop-shadow(0 0 25px rgba(118, 75, 162, 0.4)); }
}

.back-btn {
    color: rgba(248, 249, 250, 0.8);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    color: #f8f9fa;
}

/* Main content */
main {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.model-container {
    text-align: center;
}

.model-badge {
    display: inline-block;
    background: rgba(255, 193, 7, 0.2);
    color: #ffc107;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid rgba(255, 193, 7, 0.3);
    margin-bottom: 1.5rem;
}

.model-name {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.model-description {
    font-size: 1.2rem;
    color: rgba(248, 249, 250, 0.8);
    line-height: 1.6;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Model specs */
.model-specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-bottom: 4rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.spec-item {
    background: rgba(26, 27, 38, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    text-align: center;
}

.spec-label {
    display: block;
    font-size: 0.9rem;
    color: rgba(248, 249, 250, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.spec-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: #667eea;
}

/* Download section */
.download-section {
    margin-bottom: 4rem;
}

.download-section h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #f8f9fa;
}

.download-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-width: 200px;
    position: relative;
}

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

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: rgba(248, 249, 250, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.coming-soon-btn {
    opacity: 0.6;
    cursor: not-allowed;
    position: relative;
}

.coming-soon-tag {
    position: absolute;
    top: -8px;
    right: -8px;
    background: rgba(255, 193, 7, 0.9);
    color: #000;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 8px;
    font-weight: 700;
}

/* Usage section */
.usage-section h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #f8f9fa;
    text-align: center;
}

.steps-container {
    margin-bottom: 3rem;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #f8f9fa;
    margin-bottom: 0.5rem;
}

.step-content p {
    color: rgba(248, 249, 250, 0.8);
    line-height: 1.5;
}

.info-box {
    background: rgba(26, 27, 38, 0.4);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(20px);
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.info-box h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #f8f9fa;
    margin-bottom: 1rem;
}

.info-box p {
    color: rgba(248, 249, 250, 0.8);
    line-height: 1.6;
    font-size: 1rem;
}

/* Footer */
footer {
    margin-top: 4rem;
    padding: 1.5rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, rgba(26, 27, 38, 0.6) 0%, rgba(15, 15, 23, 0.8) 100%);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-text {
    color: rgba(248, 249, 250, 0.7);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.powered-by {
    color: #667eea;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.5px;
}

/* Responsive design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .model-name {
        font-size: 2.5rem;
    }
    
    .model-description {
        font-size: 1.1rem;
    }
    
    .model-specs {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .step {
        gap: 1rem;
    }
    
    .step-number {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .step-content h3 {
        font-size: 1.1rem;
    }
    
    main {
        padding: 2rem 1rem;
    }
    
    header {
        padding: 1rem;
    }
    
    .info-box {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .model-name {
        font-size: 2rem;
    }
    
    .download-section h2,
    .usage-section h2 {
        font-size: 1.5rem;
    }
    
    .model-description {
        font-size: 1rem;
    }
}

/* Animations */
.model-container {
    animation: fadeInUp 0.8s ease-out;
}

.step {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

.step:nth-child(1) { animation-delay: 0.1s; }
.step:nth-child(2) { animation-delay: 0.2s; }
.step:nth-child(3) { animation-delay: 0.3s; }
.step:nth-child(4) { animation-delay: 0.4s; }
.step:nth-child(5) { animation-delay: 0.5s; }
.step:nth-child(6) { animation-delay: 0.6s; }

.info-box {
    animation: fadeInUp 0.6s ease-out 0.7s forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}