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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background: #ffffff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: transparent;
    backdrop-filter: none;
    border-bottom: none;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

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

.nav-logo img {
    height: 45px;
    width: auto;
    max-width: 180px;
}

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

.nav-links a {
    text-decoration: none;
    color: #1a1a1a;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #1a1a1a;
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: #000000;
    color: white;
}

.btn-primary:hover {
    background: #000;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: #1a1a1a;
    border: 1px solid #1a1a1a;
}

.btn-secondary:hover {
    background: #f9fafb;
    border-color: #d1d5db;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0 0 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at top center, rgba(147,197,253,0.4) 0%, rgba(147,197,253,0.3) 30%, rgba(147,197,253,0.2) 60%, rgba(147,197,253,0.1) 85%, transparent 100%),
        linear-gradient(to bottom, #bfdbfe 0%, #93c5fd 25%, #dbeafe 50%, #e0f2fe 75%, #f8fafc 90%, #ffffff 100%);
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.hero-bg-pattern {
    display: none;
}

.hero-bg-shapes {
    display: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.2), rgba(147, 197, 253, 0.15));
    animation: float 6s ease-in-out infinite;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    bottom: -150px;
    left: -150px;
    animation-delay: 2s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    top: 20%;
    left: 5%;
    animation-delay: 4s;
}

.shape-4 {
    width: 180px;
    height: 180px;
    top: 60%;
    right: 10%;
    animation-delay: 6s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: transparent;
    border: none;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: #000000;
}

.gradient-text {
    background: linear-gradient(135deg, #3b82f6, #1e40af);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #4b5563;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

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

/* Platform Mockup */
.platform-mockup {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.3s ease;
}

.platform-mockup:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.mockup-header {
    background: #f8fafc;
    padding: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.mockup-tabs {
    display: flex;
    gap: 1rem;
}

.mockup-tabs .tab {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    background: transparent;
    color: #6b7280;
}

.mockup-tabs .tab.active {
    background: #3b82f6;
    color: white;
    border-radius: 8px;
}

.mockup-tabs .tab:hover:not(.active) {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

/* Tab Content Views */
.view-content {
    display: none;
    padding: 1.5rem;
    height: 300px;
    overflow-y: auto;
}

.view-content.active {
    display: block;
}

/* AI Chat View Styles */
.chat-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 1rem;
}

.ai-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.chat-info .ai-name {
    font-weight: 600;
    color: #1f2937;
    font-size: 0.9rem;
}

.chat-info .ai-status {
    font-size: 0.8rem;
    color: #10b981;
    font-weight: 500;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 80%;
}

.message.user-message {
    align-self: flex-end;
}

.message.ai-message {
    align-self: flex-start;
}

.message-content {
    padding: 0.75rem 1rem;
    border-radius: 18px;
    font-size: 0.9rem;
    line-height: 1.4;
}

.message.user-message .message-content {
    background: #3b82f6;
    color: white;
}

.message.ai-message .message-content {
    background: #f3f4f6;
    color: #1f2937;
}

.message-time {
    font-size: 0.75rem;
    color: #9ca3af;
    margin-top: 0.25rem;
    text-align: center;
}

.chat-input {
    display: flex;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
}

.chat-input input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 20px;
    font-size: 0.9rem;
    background: #f9fafb;
}

.send-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #3b82f6;
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.send-btn:hover {
    background: #2563eb;
}

/* Courses View Styles */
.courses-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.courses-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #10b981, #3b82f6);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.9rem;
    color: #6b7280;
    font-weight: 500;
}

.course-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.course-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 12px;
    transition: all 0.2s ease;
}

.course-item.completed {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
}

.course-item.active {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
}

.course-item.locked {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    opacity: 0.6;
}

.course-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.course-item.completed .course-icon {
    color: #10b981;
    font-size: 1.2rem;
}

.course-item.active .course-icon {
    color: #3b82f6;
    font-size: 1.2rem;
}

.course-item.locked .course-icon {
    color: #9ca3af;
    font-size: 1rem;
}

.course-info {
    flex: 1;
}

.course-name {
    font-weight: 600;
    color: #1f2937;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.course-progress {
    font-size: 0.8rem;
    color: #6b7280;
}

.course-score {
    font-weight: 600;
    font-size: 0.9rem;
}

.course-item.completed .course-score {
    color: #10b981;
}

.course-item.active .course-score {
    color: #3b82f6;
}

.course-item.locked .course-score {
    color: #9ca3af;
}

.course-actions {
    text-align: center;
}

.continue-btn {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.continue-btn:hover {
    transform: translateY(-2px);
}

/* Existing simulator styles remain the same */
.simulation-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.chart-container {
    position: relative;
    height: 120px;
    background: #f8fafc;
    border-radius: 8px;
    padding: 1rem;
    overflow: hidden;
}

.chart-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.chart-path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawPath 3s ease-out forwards;
}

.chart-point {
    opacity: 0;
    animation: fadeInPoint 0.5s ease-out forwards;
}

.chart-point:nth-child(1) { animation-delay: 0.5s; }
.chart-point:nth-child(2) { animation-delay: 1s; }
.chart-point:nth-child(3) { animation-delay: 1.5s; }
.chart-point:nth-child(4) { animation-delay: 2s; }
.chart-point:nth-child(5) { animation-delay: 2.5s; }

@keyframes drawPath {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes fadeInPoint {
    to {
        opacity: 1;
        transform: scale(1.2);
    }
}

.chart-svg {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.chart-path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawPath 2s ease-out forwards;
}

.chart-point {
    opacity: 0;
    animation: fadeInPoint 0.5s ease-out forwards;
}

.chart-point:nth-child(3) { animation-delay: 0.5s; }
.chart-point:nth-child(4) { animation-delay: 0.7s; }
.chart-point:nth-child(5) { animation-delay: 0.9s; }
.chart-point:nth-child(6) { animation-delay: 1.1s; }
.chart-point:nth-child(7) { animation-delay: 1.3s; }

@keyframes drawPath {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes fadeInPoint {
    to {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* Chart points are now handled by SVG circles */

/* SVG Chart Styles */
.chart-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.chart-path {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawPath 3s ease-out forwards;
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.3));
}

.chart-point {
    opacity: 0;
    animation: fadeInPoint 0.6s ease-out forwards;
    filter: drop-shadow(0 1px 2px rgba(59, 130, 246, 0.4));
}

.chart-point:nth-child(1) { animation-delay: 0.5s; }
.chart-point:nth-child(2) { animation-delay: 0.8s; }
.chart-point:nth-child(3) { animation-delay: 1.1s; }
.chart-point:nth-child(4) { animation-delay: 1.4s; }
.chart-point:nth-child(5) { animation-delay: 1.7s; }
.chart-point:nth-child(6) { animation-delay: 2.0s; }
.chart-point:nth-child(7) { animation-delay: 2.3s; }
.chart-point:nth-child(8) { animation-delay: 2.6s; }
.chart-point:nth-child(9) { animation-delay: 2.9s; }
.chart-point:nth-child(10) { animation-delay: 3.2s; }
.chart-point:nth-child(11) { animation-delay: 3.5s; }

@keyframes drawPath {
    to {
        stroke-dashoffset: 0;
    }
}

@keyframes fadeInPoint {
    to {
        opacity: 1;
        transform: scale(1.2);
    }
}

.metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    text-align: center;
}

.metric-label {
    font-size: 0.75rem;
    color: #6b7280;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 1rem;
    font-weight: 700;
    color: #1a1a1a;
}

.metric-value.positive {
    color: #10b981;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    scroll-margin-top: 14rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: #1a1a1a;
    scroll-margin-top: 16rem;
}

.section-header p {
    font-size: 1.125rem;
    color: #6b7280;
}

/* How it Works */
.how-it-works {
    padding: 4rem 0;
    background: white;
}

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

.step {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background: #f8fafc;
    transition: transform 0.2s;
}

.step:hover {
    transform: translateY(-4px);
}

.step-icon {
    width: 64px;
    height: 64px;
    background: #3b82f6;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.5rem;
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.step p {
    color: #6b7280;
    line-height: 1.6;
}

/* Features */
.features {
    padding: 6rem 0;
    background: #f8fafc;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: #3b82f6;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    font-size: 1.25rem;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.feature-card p {
    color: #6b7280;
    line-height: 1.6;
}

.feature-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: transform 0.2s;
}

.feature-link:hover {
    transform: translateY(-2px);
}

/* Pricing */
.pricing {
    padding: 0rem 0 4rem 0;
    background: white;
    scroll-margin-top: 12rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
    min-height: 500px;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured {
    border-color: #3b82f6;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
    padding-top: 2.5rem;
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #3b82f6;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    z-index: 1000;
}

.pricing-header {
    text-align: center;
    margin-bottom: 1.5rem;
    margin-top: 0.5rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.pricing-header p {
    color: #6b7280;
    margin-bottom: 0.5rem;
}

.pricing-price {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
}

.pricing-features {
    margin-bottom: 1.5rem;
    flex: 1;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.feature i {
    width: 16px;
    color: #10b981;
}

.feature.disabled {
    color: #9ca3af;
}

.feature.disabled i {
    color: #ef4444;
}

.pricing-card .btn-primary,
.pricing-card .btn-secondary {
    width: 100%;
    justify-content: center;
}

.pricing-cta {
    text-align: center;
}

.cta-text {
    font-size: 0.875rem;
    color: #6b7280;
    margin-bottom: 1rem;
    font-style: italic;
}

/* Testimonial */
.testimonial {
    padding: 4rem 0;
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    text-align: center;
    margin-top: 0;
}

.testimonial-content h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.testimonial .btn-primary {
    background: white;
    color: #1e40af;
    border: 2px solid white;
}

.testimonial .btn-primary:hover {
    background: transparent;
    color: white;
    border-color: white;
}

.testimonial-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Footer */
.footer {
    background: #f8fafc;
    padding: 4rem 0 2rem;
    border-top: 1px solid #e5e7eb;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.footer-logo .logo-img {
    height: 24px;
    width: auto;
    object-fit: contain;
}

.footer-section p {
    color: #6b7280;
    line-height: 1.6;
}

.footer-section h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.footer-section a {
    display: block;
    color: #6b7280;
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: #1a1a1a;
}

.footer-bottom {
    border-top: 1px solid #e5e7eb;
    padding-top: 2rem;
    text-align: center;
    color: #6b7280;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .hero-background {
        opacity: 0.9;
    }
    
    .shape-1, .shape-2, .shape-3 {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .testimonial-content h2 {
        font-size: 2rem;
    }
}

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

.feature-card,
.step,
.pricing-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* About Section - Modern Two-Column Layout */
.about {
    padding: 4rem 0;
    background: white;
    margin-bottom: 2rem;
    margin-top: -18rem;
    position: relative;
    z-index: 10;
}

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

.about-content {
    text-align: left;
}

.about-badge {
    display: inline-block;
    text-transform: uppercase;
    font-size: 0.875rem;
    color: #3b82f6;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    background: rgba(59, 130, 246, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.about-title {
    font-size: 3rem;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.about-subtitle {
    font-size: 1.125rem;
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 3rem;
    font-weight: 400;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    transition: all 0.3s ease;
}

.about-feature:hover {
    background: white;
    border-color: #3b82f6;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: #3b82f6;
    border-radius: 12px;
    color: white;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.feature-content p {
    font-size: 0.875rem;
    color: #6b7280;
    line-height: 1.6;
    margin: 0;
}

.about-cta-wrapper {
    text-align: center;
}

.about-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: #1a1a1a;
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    padding: 1rem 2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.about-cta:hover {
    background: #000;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.about-cta svg {
    transition: transform 0.3s ease;
}

.about-cta:hover svg {
    transform: translateX(4px);
}

/* Visual Column */
.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-container {
    position: relative;
    width: 100%;
    max-width: 300px;
}

/* Mobile Mockup Styles */
.mobile-mockup {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    perspective: 1000px;
}

.card {
    width: 180px;
    height: 320px;
    background: black;
    border-radius: 25px;
    border: 2px solid rgb(40, 40, 40);
    padding: 6px;
    position: relative;
    box-shadow: 2px 5px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 2px 10px 25px rgba(0, 0, 0, 0.4);
}

/* Phone positioning and tilting */
.card-left {
    transform: rotateY(-15deg) rotateZ(-5deg);
    margin-right: -0.5rem;
}

.card-center {
    transform: rotateY(0deg) rotateZ(0deg);
    z-index: 2;
}

.card-right {
    transform: rotateY(15deg) rotateZ(5deg);
    margin-left: -0.5rem;
}

.card:hover.card-left {
    transform: rotateY(-10deg) rotateZ(-3deg) translateY(-5px);
}

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

.card:hover.card-right {
    transform: rotateY(10deg) rotateZ(3deg) translateY(-5px);
}

.card-int {
    background: white;
    height: 100%;
    border-radius: 20px;
    transition: all 0.6s ease-out;
    overflow: hidden;
    position: relative;
}

.card:hover .card-int {
    transform: scale(1.02);
}

.top {
    position: absolute;
    top: 0px;
    right: 50%;
    transform: translate(50%, 0%);
    width: 35%;
    height: 15px;
    background-color: black;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
}

.speaker {
    position: absolute;
    top: 2px;
    right: 50%;
    transform: translate(50%, 0%);
    width: 40%;
    height: 2px;
    border-radius: 2px;
    background-color: rgb(20, 20, 20);
}

.camera {
    position: absolute;
    top: 5px;
    right: 84%;
    transform: translate(50%, 0%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.048);
}

.int {
    position: absolute;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    top: 50%;
    right: 50%;
    transform: translate(50%, -50%);
    background-color: rgba(0, 0, 255, 0.212);
}

.btn1, .btn2, .btn3, .btn4 {
    position: absolute;
    width: 2px;
}

.btn1, .btn2, .btn3 {
    height: 35px;
    top: 25%;
    right: -3px;
    background-image: linear-gradient(to right, #111111, #222222, #333333, #464646, #595959);
}

.btn2, .btn3 {
    transform: scale(-1);
    left: -3px;
}

.btn2, .btn3 {
    transform: scale(-1);
    height: 25px;
}

.btn2 {
    top: 22%
}

.btn3 {
    top: 30%
}

/* Mobile App Content */
.mobile-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 20px;
    color: #333;
    font-family: 'Inter', sans-serif;
}

.app-logo {
    text-align: center;
    margin-bottom: 15px;
}

.app-logo .logo-img {
    width: 45px;
    height: auto;
    opacity: 0.9;
}

/* Progress Section (Left Phone) */
.progress-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.progress-header h3 {
    font-size: 14px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: #1f2937;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #e5e7eb;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 5px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #10b981, #3b82f6);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 10px;
    color: #6b7280;
    text-align: center;
    font-weight: 500;
}

.course-modules {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.module-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.module-item.completed {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
}

.module-item.active {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
}

.module-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}

.module-item.completed .module-icon {
    color: #10b981;
    font-size: 0.9rem;
}

.module-item.active .module-icon {
    color: #3b82f6;
    font-size: 0.9rem;
}

.module-info {
    flex: 1;
    min-width: 0;
}

.module-name {
    font-size: 10px;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 2px;
    line-height: 1.2;
}

.module-progress {
    font-size: 8px;
    color: #6b7280;
}

.module-score {
    font-weight: 600;
    font-size: 10px;
    color: #10b981;
}

/* Metrics Grid (Center Phone) */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 15px 0;
    justify-items: center;
    max-width: 160px;
    margin-left: -10px;
    margin-right: auto;
}

.metric-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 8px;
    text-align: center;
    border: 1px solid #e5e7eb;
}

.metric-label {
    font-size: 8px;
    opacity: 0.7;
    margin-bottom: 3px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: #6b7280;
}

.metric-value {
    font-size: 11px;
    font-weight: 700;
    color: #1f2937;
}

.metric-value.positive {
    color: #10b981;
}

.model-info {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 8px;
    margin-top: 10px;
    border: 1px solid #e5e7eb;
}

.model-name {
    font-size: 10px;
    font-weight: 600;
    margin-bottom: 2px;
    color: #1f2937;
}

.model-status {
    font-size: 8px;
    opacity: 0.8;
    color: #10b981;
}

/* Chat Section (Right Phone) */
.chat-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 8px;
}

.ai-avatar {
    width: 25px;
    height: 25px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
}

.chat-info .ai-name {
    font-weight: 600;
    color: #1f2937;
    font-size: 10px;
}

.chat-info .ai-status {
    font-size: 8px;
    color: #10b981;
    font-weight: 500;
}

.chat-messages {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 8px;
    overflow-y: auto;
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 80%;
}

.message.user-message {
    align-self: flex-end;
}

.message.ai-message {
    align-self: flex-start;
}

.message-content {
    padding: 6px 8px;
    border-radius: 12px;
    font-size: 8px;
    line-height: 1.3;
}

.message.user-message .message-content {
    background: #3b82f6;
    color: white;
}

.message.ai-message .message-content {
    background: #f3f4f6;
    color: #1f2937;
}

.message-content p {
    margin: 0;
}

.chat-input {
    display: flex;
    gap: 4px;
    padding-top: 8px;
    border-top: 1px solid #e5e7eb;
}

.chat-input input {
    flex: 1;
    padding: 6px 8px;
    border: 1px solid #d1d5db;
    border-radius: 15px;
    font-size: 8px;
    background: #f9fafb;
}

.send-btn {
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background: #3b82f6;
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 0.7rem;
}

.send-btn:hover {
    background: #2563eb;
}

/* Newsletter Section */
.newsletter {
    padding: 4rem 0;
    background: #f8fafc;
    border-top: 1px solid #e5e7eb;
    border-bottom: 1px solid #e5e7eb;
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.newsletter-subtitle {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.newsletter-form {
    margin-bottom: 1rem;
}

.newsletter-input-group {
    display: flex;
    gap: 0.75rem;
    max-width: 500px;
    margin: 0 auto 1rem;
}

.newsletter-input {
    flex: 1;
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    transition: border-color 0.2s;
}

.newsletter-input:focus {
    outline: none;
    border-color: #3b82f6;
}

.newsletter-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: #1a1a1a;
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.newsletter-btn:hover {
    background: #000;
    transform: translateY(-1px);
}

.newsletter-note {
    font-size: 0.875rem;
    color: #9ca3af;
    font-style: italic;
}

/* Responsive adjustments for the 3-phone layout */
@media (max-width: 768px) {
    .mobile-mockup {
        gap: 1rem;
    }
    
    .card {
        width: 150px;
        height: 280px;
    }
    
    .card-left {
        transform: rotateY(-10deg) rotateZ(-3deg);
    }
    
    .card-right {
        transform: rotateY(10deg) rotateZ(3deg);
    }
    
    .mobile-content {
        padding: 15px;
    }
    
    .app-logo .logo-img {
        width: 35px;
    }
    
    .metrics-grid {
        max-width: 130px;
        gap: 6px;
    }
    
    .metric-item {
        padding: 6px;
    }
    
    .newsletter-title {
        font-size: 2rem;
    }
    
    .newsletter-input-group {
        flex-direction: column;
        gap: 1rem;
    }
    
    .newsletter-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .mobile-mockup {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .card {
        width: 180px;
        height: 320px;
    }
    
    .card-left,
    .card-center,
    .card-right {
        transform: none;
        margin: 0;
    }
    
    .card:hover.card-left,
    .card:hover.card-center,
    .card:hover.card-right {
        transform: translateY(-5px);
    }
    
    .mobile-content {
        padding: 20px;
    }
    
    .app-logo .logo-img {
        width: 45px;
    }
    
    .metrics-grid {
        max-width: 160px;
        gap: 8px;
    }
    
    .metric-item {
        padding: 8px;
    }
    
    .newsletter-title {
        font-size: 1.75rem;
    }
    
    .about-subtitle,
    .newsletter-subtitle {
        font-size: 1rem;
    }
}