/* CSS Variables for consistent theming */
:root {
    --primary-orange: #FF6B35;
    --primary-blue: #4A90E2;
    --warm-white: #FAFAFA;
    --light-gray: #F8F9FA;
    --dark-gray: #2C3E50;
    --medium-gray: #6C757D;
    --gradient-primary: linear-gradient(135deg, var(--primary-orange), var(--primary-blue));
    --gradient-light: linear-gradient(135deg, #FFB366, #6BB6FF);
    --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* Dark theme variables */
@media (prefers-color-scheme: dark) {
    :root {
        --warm-white: #1a1a1a;
        --light-gray: #2d2d2d;
        --dark-gray: #ffffff;
        --medium-gray: #b0b0b0;
        --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.3);
        --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.4);
    }
}

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

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
}

@media (prefers-color-scheme: dark) {
    .navbar {
        background: rgba(26, 26, 26, 0.95);
    }
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-gray);
}

.brain-icon {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-link:hover {
    color: var(--primary-orange);
    background: var(--light-gray);
}

.download-btn {
    background: var(--gradient-primary);
    color: white !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: var(--border-radius);
    font-weight: 600;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    background: var(--gradient-light);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--light-gray);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--medium-gray);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--medium-gray);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: transparent;
    color: var(--dark-gray);
    border: 2px solid var(--primary-orange);
}

.btn-secondary:hover {
    background: var(--primary-orange);
    color: white;
}

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

.hero-brain {
    width: 100%;
    max-width: 400px;
    height: auto;
    animation: float 6s ease-in-out infinite;
}

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

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--warm-white);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 4rem;
    color: var(--dark-gray);
}

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

.feature-card {
    background: var(--light-gray);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-orange);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

.feature-card p {
    color: var(--medium-gray);
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Specifications Section */
.specs {
    padding: 100px 0;
    background: var(--light-gray);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: var(--warm-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.spec-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-medium);
}

.spec-label {
    font-weight: 600;
    color: var(--dark-gray);
    font-size: 1.1rem;
}

.spec-value {
    color: var(--primary-orange);
    font-weight: 600;
    font-size: 1.1rem;
}

/* Stats Section */
.stats {
    padding: 80px 0;
    background: var(--gradient-primary);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem 1rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 500;
}

/* Testimonials Section */
.testimonials {
    padding: 100px 0;
    background: var(--warm-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.testimonial-avatar {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.testimonial-content p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    color: var(--dark-gray);
    font-style: italic;
}

.testimonial-author {
    font-weight: 600;
    color: var(--primary-orange);
    font-size: 1.1rem;
}

/* Download Section */
.download {
    padding: 100px 0;
    background: var(--light-gray);
    text-align: center;
}

.download-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

.download-content p {
    font-size: 1.3rem;
    color: var(--medium-gray);
    margin-bottom: 2.5rem;
}

.btn-download {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1.5rem 3rem;
    font-size: 1.3rem;
    font-weight: 700;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 1rem;
}

.btn-download:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.download-note {
    margin-top: 1.5rem;
    color: var(--medium-gray);
    font-size: 1rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--warm-white);
    margin: 5% auto;
    padding: 0;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-medium);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 2rem 2rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--light-gray);
}

.modal-header h3 {
    color: var(--dark-gray);
    font-size: 1.5rem;
    font-weight: 600;
}

.close {
    color: var(--medium-gray);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.close:hover {
    color: var(--primary-orange);
}

.modal-body {
    padding: 2rem;
}

.progress-container {
    margin-bottom: 2rem;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background-color: var(--light-gray);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    color: var(--medium-gray);
    font-weight: 500;
}

.installation-steps {
    margin-bottom: 2rem;
}

.step {
    padding: 0.5rem 0;
    color: var(--medium-gray);
    font-size: 1rem;
}

.revelation {
    text-align: center;
}

.revelation-content {
    padding: 2rem;
    background: var(--light-gray);
    border-radius: var(--border-radius);
}

.revelation-content h4 {
    color: var(--primary-orange);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.revelation-content p {
    color: var(--dark-gray);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

/* Footer */
.footer {
    background: var(--dark-gray);
    color: var(--warm-white);
    padding: 3rem 0;
    text-align: center;
}

@media (prefers-color-scheme: dark) {
    .footer {
        background: var(--light-gray);
        color: var(--dark-gray);
    }
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-text {
    opacity: 0.8;
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn-primary, .btn-secondary {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}