/* CSS Variables */
:root {
    /* Colors from your main project */
    --primary-color: #2196F3;
    --primary-dark: #1565C0;
    --primary-light: #64B5F6;
    --accent-color: #FF9800;
    --accent-light: #FFB74D;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    
    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #6c757d;
    --dark-gray: #343a40;
    --black: #000000;
    
    /* Typography */
    --font-family: 'Montserrat', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    --gradient-hero: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark-gray);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Typography */
.primary-color {
    color: var(--primary-color);
}

.gradient-text {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--dark-gray);
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color);
}

.cta-button {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 3px;
    transition: transform 0.3s ease;
    padding: 10px;
    border-radius: var(--radius-sm);
}

.hamburger:hover {
    background-color: rgba(33, 150, 243, 0.1);
    transform: scale(1.1);
}

.hamburger.active {
    transform: rotate(45deg);
}

.hamburger.active:hover {
    background-color: rgba(33, 150, 243, 0.2);
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--dark-gray);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.hamburger:hover span {
    background: var(--primary-color);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(90deg) translateX(6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-90deg) translateX(6px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><circle cx="200" cy="200" r="3" fill="%23e3f2fd" opacity="0.5"/><circle cx="800" cy="300" r="2" fill="%23e8f5e8" opacity="0.5"/><circle cx="400" cy="600" r="2" fill="%23fff3e0" opacity="0.5"/></svg>');
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    min-height: 80vh;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--dark-gray);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--medium-gray);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.primary-btn {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

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

.secondary-btn {
    background: var(--white);
    color: var(--dark-gray);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all 0.3s ease;
    border: 2px solid var(--light-gray);
}

.secondary-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    font-weight: 500;
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-mockup {
    max-width: 400px;
    height: auto;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    transition: transform 0.3s ease;
}

.hero-mockup:hover {
    transform: scale(1.05);
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: var(--font-size-sm);
    animation: float 3s ease-in-out infinite;
}

.quest-card {
    top: 20%;
    right: -10%;
    color: var(--success-color);
    animation-delay: 0s;
}

.xp-card {
    top: 60%;
    left: -15%;
    color: var(--warning-color);
    animation-delay: 1s;
}

.streak-card {
    bottom: 30%;
    right: -5%;
    color: var(--danger-color);
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark-gray);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

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

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: var(--white);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--white);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-gray);
}

.feature-description {
    color: var(--medium-gray);
    line-height: 1.7;
}

/* How It Works Section */
.how-it-works {
    padding: var(--spacing-3xl) 0;
    background: var(--light-gray);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3xl);
}

.step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    opacity: 0;
    transform: translateX(-30px);
}

.step.animate-in {
    opacity: 1;
    transform: translateX(0);
}

.step:nth-child(even) {
    grid-template-columns: 1fr auto;
}

.step:nth-child(even) .step-content {
    order: -1;
    text-align: right;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    box-shadow: var(--shadow-lg);
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-gray);
}

.step-description {
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.step-image {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
    width: 20% !important; 
    min-width: 300px !important;
}

.step-image:hover {
    transform: scale(1.05);
}

/* Screenshots Section */
.screenshots {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.screenshot-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.screenshot-item {
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
}

.screenshot-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.screenshot-item img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
    margin-bottom: var(--spacing-md);
}

.screenshot-item img:hover {
    transform: scale(1.05);
}

.screenshot-item h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-gray);
}

.screenshot-item p {
    color: var(--medium-gray);
    font-size: var(--font-size-sm);
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-3xl) 0;
    background: var(--light-gray);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
}

.testimonial-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

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

.testimonial-content {
    margin-bottom: var(--spacing-md);
}

.testimonial-content p {
    font-style: italic;
    color: var(--medium-gray);
    line-height: 1.7;
    font-size: var(--font-size-lg);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author h5 {
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 2px;
}

.testimonial-author span {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
}

/* CTA Section */
.cta {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    line-height: 1.7;
}

.cta-button-large {
    background: var(--white);
    color: var(--primary-color);
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 700;
    font-size: var(--font-size-xl);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-md);
}

.cta-button-large:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.cta-note {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xl);
}

.footer-section h4 {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 1080px) {
    .hero-title {
        margin-top: 80px;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hamburger {
        display: flex;
        z-index: 1001;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }

    .hero-title {
        margin-top: 90px;
        font-size: var(--font-size-3xl);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        justify-content: center;
        gap: var(--spacing-lg);
    }

    .step {
        grid-template-columns: 1fr !important;
        text-align: center;
    }

    .step:nth-child(even) .step-content {
        order: 0;
        text-align: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .screenshot-gallery {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .screenshot-gallery {
        grid-template-columns: 1fr;
    }

    .primary-btn,
    .secondary-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-base);
    }

    .cta-button-large {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-lg);
    }
}

/* Animation delays for staggered effects */
.feature-card:nth-child(1) { transition-delay: 0.1s; }
.feature-card:nth-child(2) { transition-delay: 0.2s; }
.feature-card:nth-child(3) { transition-delay: 0.3s; }
.feature-card:nth-child(4) { transition-delay: 0.4s; }
.feature-card:nth-child(5) { transition-delay: 0.5s; }
.feature-card:nth-child(6) { transition-delay: 0.6s; }

.step:nth-child(1) { transition-delay: 0.2s; }
.step:nth-child(2) { transition-delay: 0.4s; }
.step:nth-child(3) { transition-delay: 0.6s; }

.screenshot-item:nth-child(1) { transition-delay: 0.1s; }
.screenshot-item:nth-child(2) { transition-delay: 0.2s; }
.screenshot-item:nth-child(3) { transition-delay: 0.3s; }
.screenshot-item:nth-child(4) { transition-delay: 0.4s; }

.testimonial-card:nth-child(1) { transition-delay: 0.1s; }
.testimonial-card:nth-child(2) { transition-delay: 0.2s; }
.testimonial-card:nth-child(3) { transition-delay: 0.3s; }

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}