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

body {
    font-family: 'Crimson Text', Georgia, 'Times New Roman', serif;
    line-height: 1.7;
    color: #2c2c2c;
    background-color: #fefefe;
    font-size: 18px;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e5e5;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: #8b5a2b;
}

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

.nav-links a {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #8b5a2b;
}

/* Buttons */
.btn-primary {
    background: #8b5a2b;
    color: white;
    border: none;
    padding: 0.875rem 1.75rem;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    letter-spacing: 0.025em;
}

.btn-primary:hover {
    background: #744210;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 90, 43, 0.3);
}

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

.btn-secondary {
    background: transparent;
    color: #8b5a2b;
    border: 1px solid #d69e2e;
    padding: 0.875rem 1.75rem;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    letter-spacing: 0.025em;
}

.btn-secondary:hover {
    background: #fefcbf;
    border-color: #8b5a2b;
    transform: translateY(-2px);
}

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

.full-width {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 8rem 0 6rem;
    background: #fefefe;
    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: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
}

.highlight {
    color: #d69e2e;
    font-style: italic;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #6b7280;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 600;
    color: #8b5a2b;
}

.stat-label {
    font-size: 0.875rem;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.hero-mockup {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    max-width: 380px;
    width: 100%;
}

.hero-mockup .mockup-content {
    padding: 1.5rem;
}

.hero-mockup .lesson-header {
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
}

.hero-mockup .lesson-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.hero-mockup .lesson-text {
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

.hero-mockup .interactive-exercise {
    padding: 1.25rem;
    margin-bottom: 0;
}

.hero-mockup .interactive-exercise h4 {
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.hero-mockup .exercise-options {
    gap: 0.5rem;
    margin-bottom: 0;
}

.hero-mockup .option-btn {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

.hero-mockup .hero-success {
    margin-top: 0.75rem;
    padding: 0.625rem;
}

/* App Demo Section */
.app-demo {
    padding: 6rem 0;
    background: #f8fafc;
}

.demo-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
}

.app-mockup {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.mockup-header {
    background: #f7fafc;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mockup-controls {
    display: flex;
    gap: 0.5rem;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #cbd5e0;
}

.control:nth-child(1) { background: #f56565; }
.control:nth-child(2) { background: #ed8936; }
.control:nth-child(3) { background: #48bb78; }

.mockup-title {
    color: #4a5568;
    font-weight: 400;
    font-size: 0.85rem;
    font-family: 'Crimson Text', Georgia, 'Times New Roman', serif;
}

.mockup-content {
    padding: 2rem;
}

.lesson-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e2e8f0;
}

.book-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.book-icon {
    font-size: 2rem;
}

.book-details h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.25rem;
}

.book-details span {
    color: #6b7280;
    font-size: 0.875rem;
}

.progress-indicator {
    width: 120px;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #8b5a2b 0%, #d69e2e 100%);
    transition: width 0.3s ease;
}

.lesson-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 1rem;
}

.lesson-text {
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.interactive-exercise {
    background: #f0f9ff;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid #3b82f6;
}

.interactive-exercise h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e40af;
    margin-bottom: 0.75rem;
}

.interactive-exercise p {
    color: #4a5568;
    margin-bottom: 1rem;
}

.exercise-options {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.option-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    background: white;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
}

.option-btn:hover {
    border-color: #3b82f6;
    background: #f0f9ff;
}

.option-btn.active {
    border-color: #3b82f6;
    background: #dbeafe;
    color: #1e40af;
}

.exercise-feedback {
    display: flex;
    gap: 1rem;
}

.feedback-item {
    flex: 1;
    padding: 0.75rem;
    background: #f9fafb;
    border-radius: 6px;
    font-size: 0.875rem;
}

.feedback-item.highlight {
    background: #fef3c7;
    border-left: 3px solid #f59e0b;
}

.feedback-explanation {
    margin-top: 1rem;
    padding: 0.875rem;
    background: #f8fafc;
    border-radius: 6px;
    font-size: 0.875rem;
    color: #4a5568;
    line-height: 1.5;
}

.hero-success {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0;
    padding: 1rem 1.25rem;
    background: #d1fae5;
    border-radius: 8px;
    border: 1px solid #10b981;
    animation: successPulse 0.6s ease-out;
    min-height: 60px;
    width: 100%;
}

.success-icon {
    width: 24px;
    height: 24px;
    background: #10b981;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
}

.success-text {
    color: #065f46;
    font-weight: 600;
    font-size: 0.9rem;
}

@keyframes successPulse {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes confetti {
    0% {
        opacity: 1;
        transform: translateY(0) rotateZ(0deg);
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) rotateZ(720deg);
    }
}

.confetti-piece {
    position: absolute;
    width: 8px;
    height: 8px;
    background: #f59e0b;
    animation: confetti 1s ease-out forwards;
    pointer-events: none;
}

.real-world-application {
    background: #fffbeb;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-left: 4px solid #f59e0b;
}

.real-world-application h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #92400e;
    margin-bottom: 0.75rem;
}

.real-world-application p {
    color: #4a5568;
    line-height: 1.6;
}

.lesson-actions {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.action-btn {
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.action-btn.primary {
    background: #8b5a2b;
    color: white;
}

.action-btn.primary:hover {
    background: #744210;
    transform: translateY(-1px);
}

.action-btn.secondary {
    background: transparent;
    color: #6b7280;
    border: 1px solid #d1d5db;
}

.action-btn.secondary:hover {
    background: #f9fafb;
    border-color: #9ca3af;
}

.demo-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.feature-highlight {
    text-align: center;
    padding: 1.5rem;
}

.feature-highlight .feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-highlight h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.5rem;
}

.feature-highlight p {
    color: #6b7280;
    line-height: 1.6;
    font-size: 0.9rem;
}

/* Gamified Demo Section */
.gamified-demo {
    padding: 6rem 0;
    background: #f8fafc;
}

.game-container {
    max-width: 800px;
    margin: 0 auto;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.player-stats {
    display: flex;
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #8b5a2b;
}

.time-challenge {
    text-align: center;
}

.timer-circle {
    position: relative;
    width: 60px;
    height: 60px;
    margin-bottom: 0.5rem;
}

.timer-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.timer-bg {
    fill: none;
    stroke: #e2e8f0;
    stroke-width: 3;
}

.timer-progress {
    fill: none;
    stroke: #10b981;
    stroke-width: 3;
    stroke-dasharray: 100, 100;
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 0.1s linear;
}

.timer-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.125rem;
    font-weight: 700;
    color: #10b981;
}

.timer-label {
    font-size: 0.75rem;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.game-mockup {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.challenge-content {
    padding: 2rem;
}

.challenge-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e2e8f0;
}

.challenge-header h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 1rem;
}

.challenge-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.challenge-progress span {
    font-size: 0.875rem;
    color: #6b7280;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    margin-left: 1rem;
    overflow: hidden;
}

.question-container h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.75rem;
}

.question-container p {
    color: #4a5568;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.answer-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.answer-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.answer-btn:hover {
    border-color: #8b5a2b;
    background: #fefcbf;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.option-letter {
    width: 32px;
    height: 32px;
    background: #f7fafc;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #4a5568;
    flex-shrink: 0;
}

.option-text {
    font-size: 0.95rem;
    color: #2d3748;
    font-weight: 500;
}

.answer-btn.correct {
    border-color: #10b981;
    background: #d1fae5;
}

.answer-btn.correct .option-letter {
    background: #10b981;
    color: white;
}

.answer-btn.wrong {
    border-color: #ef4444;
    background: #fee2e2;
}

.answer-btn.wrong .option-letter {
    background: #ef4444;
    color: white;
}

.results-container {
    animation: fadeInUp 0.5s ease-out;
}

.insight-reveal {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.insight-card {
    background: linear-gradient(135deg, #fefefe 0%, #f8fafc 100%);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid #e2e8f0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.insight-header {
    margin-bottom: 1.5rem;
}

.insight-badge {
    background: linear-gradient(135deg, #8b5a2b 0%, #d69e2e 100%);
    color: white;
    padding: 0.375rem 0.875rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    display: inline-block;
}

.insight-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0;
    line-height: 1.3;
}

.insight-explanation {
    font-size: 1.125rem;
    line-height: 1.6;
    color: #374151;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(139, 90, 43, 0.05);
    border-radius: 12px;
    border-left: 4px solid #8b5a2b;
}

.real-world-examples {
    margin-bottom: 2rem;
}

.real-world-examples h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.example-grid {
    display: grid;
    gap: 1rem;
}

.example-item {
    padding: 1rem;
    background: white;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    transition: all 0.2s ease;
}

.example-item:hover {
    border-color: #8b5a2b;
    box-shadow: 0 4px 12px rgba(139, 90, 43, 0.1);
}

.example-text {
    flex: 1;
}

.example-text strong {
    display: block;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.25rem;
}

.example-text span {
    font-size: 0.875rem;
    color: #6b7280;
    line-height: 1.5;
}

.actionable-takeaway {
    padding: 1.5rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 12px;
    border: 1px solid #0ea5e9;
}

.takeaway-content strong {
    display: block;
    font-weight: 600;
    color: #0c4a6e;
    margin-bottom: 0.5rem;
}

.takeaway-content p {
    color: #075985;
    line-height: 1.5;
    margin: 0;
}

.stats-mini {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
}

.stats-mini .stat-item {
    text-align: center;
}

.stats-mini .stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: #8b5a2b;
    margin-bottom: 0.25rem;
}

.stats-mini .stat-label {
    font-size: 0.75rem;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.achievement-banner {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    animation: achievementPulse 0.6s ease-out;
}

.achievement-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.achievement-icon {
    font-size: 2rem;
}

.achievement-text h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.achievement-text p {
    font-size: 0.875rem;
    opacity: 0.9;
}

.continue-btn {
    width: 100%;
    padding: 1rem 2rem;
    background: #8b5a2b;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 32px;
}

.continue-btn:hover {
    background: #744210;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 90, 43, 0.3);
}


@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes achievementPulse {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Sections */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1a1a1a;
}

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

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

.feature-card {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    border-color: #cbd5e0;
}

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

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

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

/* How it works */
.testimonials {
    padding: 6rem 0;
    background: #f8fafc;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease;
}

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

.testimonial-content {
    margin-bottom: 1.5rem;
}

.testimonial-content p {
    font-size: 1.125rem;
    line-height: 1.6;
    color: #374151;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #8b5a2b 0%, #d69e2e 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.25rem;
}

.author-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.25rem;
}

.author-info span {
    font-size: 0.875rem;
    color: #6b7280;
}

.trust-indicators {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #e5e7eb;
}

.trust-stat {
    text-align: center;
}

.trust-number {
    font-size: 2rem;
    font-weight: 700;
    color: #8b5a2b;
    margin-bottom: 0.5rem;
}

.trust-label {
    font-size: 0.875rem;
    color: #6b7280;
    font-weight: 500;
}


/* Featured Learning */
.featured-learning {
    padding: 6rem 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    z-index: 2;
}

.how-it-works .section-header {
    margin-bottom: 4rem;
    padding: 0;
    background: none;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
}

.how-it-works .section-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.section-subtitle {
    color: #6b7280;
    font-size: 1.25rem;
    margin-top: 1rem;
    line-height: 1.6;
    font-weight: 500;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.learning-paths {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.path-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
}

.path-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
    border-color: #cbd5e0;
}

.path-card.featured {
    border-color: #8b5a2b;
    box-shadow: 0 8px 25px rgba(139, 90, 43, 0.15);
}

.path-card.featured::before {
    content: "Most Popular";
    position: absolute;
    top: -12px;
    left: 2rem;
    background: #8b5a2b;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.path-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.path-category {
    background: #f0f9ff;
    color: #1e40af;
    padding: 0.375rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.path-duration {
    color: #6b7280;
    font-size: 0.875rem;
    font-weight: 500;
}

.path-card h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.path-description {
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.path-books {
    margin-bottom: 1.5rem;
}

.book-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f1f5f9;
}

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

.book-title {
    font-weight: 500;
    color: #2d3748;
    font-size: 0.9rem;
}

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

.path-stats {
    display: flex;
    gap: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #f1f5f9;
}

.path-stats .stat {
    color: #6b7280;
    font-size: 0.875rem;
}

.browse-section {
    text-align: center;
    padding: 2rem;
    background: #f8fafc;
    border-radius: 12px;
}

.browse-section p {
    color: #6b7280;
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

/* Pricing */
.pricing {
    padding: 6rem 0;
    background: #f8fafc;
}

.pricing-cards {
    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 #e5e5e5;
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
    position: relative;
    transition: all 0.3s;
}

.pricing-card.popular {
    border-color: #8b5a2b;
    transform: scale(1.02);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #8b5a2b;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.pricing-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 2rem;
}

.currency {
    font-size: 1.25rem;
    color: #6b7280;
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: #1a1a1a;
}

.period {
    font-size: 1rem;
    color: #6b7280;
}

.features-list {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.features-list li {
    padding: 0.5rem 0;
    color: #6b7280;
    position: relative;
    padding-left: 1.5rem;
    text-align: left;
}

.features-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* CTA */
.cta {
    padding: 6rem 0;
    background: #f7fafc;
    color: #2d3748;
    text-align: center;
    border-top: 1px solid #e2e8f0;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-note {
    margin-top: 1rem;
    opacity: 0.8;
    font-size: 0.875rem;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand .logo-text {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-brand p {
    margin-top: 1rem;
    color: #9ca3af;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-column a {
    display: block;
    color: #9ca3af;
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.2s;
}

.footer-column a:hover {
    color: #cbd5e0;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        font-size: 16px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .nav-links {
        display: none;
    }
    
    .navbar {
        padding: 0.75rem 0;
    }
    
    .hero {
        padding: 6rem 0 4rem;
        min-height: auto;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: left;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
        line-height: 1.2;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons .btn-primary,
    .hero-buttons .btn-secondary {
        width: 100%;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: space-between;
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .hero-mockup {
        max-width: 320px;
    }
    
    .hero-mockup .mockup-content {
        padding: 1.5rem;
    }
    
    .hero-mockup .lesson-content h3 {
        font-size: 1.125rem;
    }
    
    .hero-mockup .exercise-options {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .app-demo {
        padding: 4rem 0;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .app-mockup {
        order: 1;
    }
    
    .demo-features {
        order: 2;
        flex-direction: row;
        gap: 1rem;
    }
    
    .feature-highlight {
        padding: 1rem;
        flex: 1;
    }
    
    .feature-highlight .feature-icon {
        font-size: 2rem;
    }
    
    .mockup-content {
        padding: 1.5rem;
    }
    
    .lesson-content h3 {
        font-size: 1.25rem;
    }
    
    .exercise-options {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .exercise-feedback {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .lesson-actions {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .features,
    .testimonials,
    .popular-books,
    .pricing {
        padding: 4rem 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .trust-indicators {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .learning-paths {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .path-card {
        padding: 1.5rem;
    }
    
    .path-card.featured::before {
        left: 1.5rem;
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .pricing-card {
        padding: 2rem;
    }
    
    .pricing-card.popular {
        transform: none;
        margin: 0;
    }
    
    .cta {
        padding: 4rem 0;
    }
    
    .cta-content h2 {
        font-size: 1.875rem;
    }
    
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 15px;
    }
    
    .container {
        padding: 0 12px;
    }
    
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
    
    .pricing-card {
        padding: 1.5rem;
    }
}