/* MM Learning Lab Main Stylesheet */

:root {
    /* Main colors */
    --primary: #7C3AED;
    --primary-light: #A78BFA;
    --primary-dark: #5B21B6;
    --secondary: #10B981;
    --secondary-light: #34D399;
    --secondary-dark: #059669;
    
    /* Neutrals */
    --dark: #1F2937;
    --light: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    
    /* Accent colors */
    --accent: #F59E0B;
    --accent-light: #FBBF24;
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;
    
    /* Gradients */
    --gradient-1: linear-gradient(135deg, #7C3AED 0%, #10B981 100%);
    --gradient-2: linear-gradient(135deg, #A78BFA 0%, #34D399 100%);
    
    /* Typography */
    --font-primary: 'Space Grotesk', sans-serif;
    --font-secondary: 'Outfit', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Borders */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
    scroll-behavior: smooth;
}

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

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

a {
    text-decoration: none;
    color: var(--primary);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
}

ul, ol {
    list-style-position: inside;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.section-header p {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.125rem;
    color: var(--gray-600);
}

/* Navigation */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg) 0;
    box-shadow: var(--shadow-sm);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
}

/* Add styling for the logo icon */
.logo img {
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

.logo-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.by-line {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--gray-500);
    margin-left: var(--spacing-xs);
    opacity: 0.9;
}

.by-line-link {
    color: var(--primary-light);
    font-weight: 500;
    transition: color 0.3s ease;
}

.by-line-link:hover {
    color: var(--primary);
    text-decoration: underline;
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--dark);
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -4px;
    left: 0;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-actions {
    display: flex;
    gap: var(--spacing-md);
}

.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease;
    background-color: var(--dark);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: white;
    color: var(--primary);
    border: 1px solid var(--primary-light);
}

.btn-secondary:hover {
    background: var(--gray-100);
    transform: translateY(-3px);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Hero Section */
.hero {
    padding-top: 8rem;
    padding-bottom: 6rem;
    background: var(--gradient-1);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

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

.trust-badges {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(91, 33, 182, 0.7);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.badge-icon {
    font-size: 1.25rem;
}

.badge-text {
    color: white;
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.app-preview {
    position: relative;
}

.app-screen {
    width: 300px;
    height: 600px;
    background: white;
    border-radius: 40px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    margin: 0 auto;
    position: relative;
    z-index: 2;
    border: 10px solid var(--dark);
}

.app-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    color: var(--gray-500);
    font-weight: 500;
}

.hero-waves {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
}

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

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

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

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

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    background: var(--gradient-1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

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

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

.step {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 25px;
    top: 50px;
    bottom: -30px;
    width: 2px;
    background: var(--primary-light);
}

.step-number {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    background: var(--gradient-1);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    z-index: 2;
}

.step-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.demo-cta {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

/* Curriculum Section */
.curriculum {
    padding: var(--spacing-3xl) 0;
    background-color: var(--gray-100);
}

.curriculum-tabs {
    max-width: 900px;
    margin: 0 auto;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: white;
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: var(--gradient-1);
    color: white;
}

.tab-panel {
    display: none;
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.tab-panel.active {
    display: block;
}

.tab-panel h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.curriculum-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.curriculum-item h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

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

.testimonial-carousel {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.testimonial {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.testimonial-text {
    font-style: italic;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.testimonial-text::before,
.testimonial-text::after {
    content: '"';
    color: var(--primary-light);
    font-size: 2rem;
    font-weight: 700;
}

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

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gray-300);
    border-radius: 50%;
}

.author-info h4 {
    margin-bottom: 0;
}

.author-info p {
    margin-bottom: 0;
    color: var(--gray-500);
    font-size: 0.875rem;
}

.carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
}

.prev-btn,
.next-btn {
    background: white;
    border: 1px solid var(--gray-300);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.prev-btn:hover,
.next-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.carousel-indicators {
    display: flex;
    gap: var(--spacing-sm);
}

.indicator {
    width: 10px;
    height: 10px;
    background: var(--gray-300);
    border-radius: 50%;
    cursor: pointer;
}

.indicator.active {
    background: var(--primary);
}

/* Download Section */
.download {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-2);
    color: white;
    position: relative;
}

.download .section-header h2 {
    background: white;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.download .section-header p {
    color: rgba(255, 255, 255, 0.9);
    max-width: 800px;
}

.download-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2xl);
    justify-content: center;
    align-items: flex-start;
    max-width: 900px;
    margin: 0 auto;
}

.app-store-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 300px;
}

.store-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: white;
    color: var(--dark);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.store-button:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    color: var(--dark);
}

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

.store-info {
    display: flex;
    flex-direction: column;
}

.store-label {
    font-size: 0.75rem;
    opacity: 0.7;
}

.store-name {
    font-weight: 700;
    font-size: 1.25rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Footer */
footer {
    background: var(--dark);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
}

.main-site-link {
    margin-top: var(--spacing-md);
    font-size: 0.95rem;
}

.main-site-link a {
    color: var(--primary-light);
    font-weight: 600;
    transition: color 0.3s ease;
}

.main-site-link a:hover {
    color: var(--accent-light);
    text-decoration: underline;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.social-link {
    color: var(--gray-400);
}

.social-link:hover {
    color: white;
}

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

.footer-links-column h3 {
    color: white;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

.footer-links-column ul {
    list-style: none;
}

.footer-links-column li {
    margin-bottom: var(--spacing-sm);
}

.footer-links-column a {
    color: var(--gray-400);
}

.footer-links-column a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-700);
    font-size: 0.875rem;
}

.language-selector select {
    background: transparent;
    color: white;
    border: 1px solid var(--gray-700);
    padding: 0.3rem 0.5rem;
    border-radius: var(--radius-sm);
}

/* Responsive Design */
@media (max-width: 992px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        margin: 0 auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .trust-badges {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .app-preview {
        margin-top: var(--spacing-2xl);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-brand {
        max-width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-xl);
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-actions {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .trust-badges {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .tab-nav {
        flex-direction: column;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .download-options {
        flex-direction: column;
    }
    
    .app-store-buttons {
        margin-top: var(--spacing-xl);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
}

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

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.screenshot-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

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

.screenshot-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-bottom: 1px solid var(--gray-200);
}

.screenshot-content {
    padding: var(--spacing-lg);
    text-align: center;
}

.screenshot-content h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.screenshot-content p {
    color: var(--gray-600);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Update for App Preview in Hero */
.app-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

@media (max-width: 768px) {
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
}