/* PlastiLess App Website - Modern Landing Page Styles */
/* Conversion-optimized design with focus on microplastic reduction */

/* CSS Variables for consistent theming */
:root {
    --primary-color: #1E40AF;
    --primary-dark: #1E3A8A;
    --primary-light: #3B82F6;
    --secondary-color: #0891B2;
    --secondary-light: #06B6D4;
    --accent-color: #F59E0B;
    --text-dark: #1A1A1A;
    --text-medium: #4A4A4A;
    --text-light: #6C6C6C;
    --background-light: #F8FAFB;
    --background-white: #FFFFFF;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
    --border-radius: 12px;
    --max-width: 1200px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 50%, #E0F2FE 100%);
    padding: 60px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(30, 64, 175, 0.05) 0%, transparent 70%);
    animation: pulse 20s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(180deg); }
}

.hero-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-brand {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    animation: fadeInUp 0.6s ease-out;
}

.hero-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(30, 64, 175, 0.3);
    filter: drop-shadow(0 4px 8px rgba(30, 64, 175, 0.2));
}

.hero-badge {
    display: inline-block;
    background: rgba(30, 64, 175, 0.1);
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-dark);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-subtitle .app-name {
    color: var(--primary-color);
    font-weight: 700;
    font-style: normal;
}

.hero-title .highlight {
    color: var(--primary-color);
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-medium);
    margin-bottom: 40px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.4;
}

.cta-section {
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--primary-color);
    color: white;
    padding: 18px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(30, 64, 175, 0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(30, 64, 175, 0.4);
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

.cta-note {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-medium);
}

.hero-image {
    position: relative;
    animation: fadeIn 0.8s ease-out 0.5s both;
}

.app-mockup {
    position: relative;
    text-align: center;
}

.phone-mockup {
    position: relative;
    max-width: 300px;
    margin: 0 auto;
}

.screenshot {
    max-width: 100%;
    height: auto;
    border-radius: 25px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.screenshot.active {
    position: relative;
    opacity: 1;
}

.screenshot:nth-child(1) { animation-delay: 0s; }
.screenshot:nth-child(2) { animation-delay: 2s; }
.screenshot:nth-child(3) { animation-delay: 4s; }
.screenshot:nth-child(4) { animation-delay: 6s; }

/* Auto-rotating screenshots */
@keyframes screenshotRotate {
    0%, 22% { opacity: 1; }
    25%, 100% { opacity: 0; }
}

.phone-mockup:hover .screenshot {
    animation-play-state: paused;
}

.phone-mockup .screenshot:nth-child(1) {
    animation: screenshotRotate 16s infinite;
}

.phone-mockup .screenshot:nth-child(2) {
    animation: screenshotRotate 16s infinite 4s;
}

.phone-mockup .screenshot:nth-child(3) {
    animation: screenshotRotate 16s infinite 8s;
}

.phone-mockup .screenshot:nth-child(4) {
    animation: screenshotRotate 16s infinite 12s;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Problem Section */
.problem-section {
    padding: 100px 0;
    background: var(--background-light);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.problem-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.problem-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.problem-card p {
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: 15px;
}

.source-link {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(30, 64, 175, 0.1);
}

.source-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s ease;
}

.source-link a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.source-link i {
    font-size: 0.75rem;
    opacity: 0.7;
}

.research-note {
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-medium);
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Features Section */
.features-section {
    padding: 100px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-card {
    background: var(--background-light);
    padding: 40px;
    border-radius: var(--border-radius);
    position: relative;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-card.featured {
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 50%, #E0F2FE 100%);
    transform: scale(1.05);
}

.feature-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--accent-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.5rem;
    margin-bottom: 25px;
}

.feature-card h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-medium);
    margin-bottom: 20px;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    color: var(--text-medium);
    padding-left: 25px;
    position: relative;
    margin-bottom: 10px;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
    background: var(--background-light);
}

.steps-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
}

.steps-timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(to right, var(--primary-light), var(--primary-color));
    z-index: 0;
}

.step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    color: white;
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0 auto 25px;
    box-shadow: 0 8px 20px rgba(30, 64, 175, 0.3);
}

.step h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.step p {
    color: var(--text-medium);
    max-width: 300px;
    margin: 0 auto;
}

/* Social Proof Section - now Benefits Section */
.social-proof {
    padding: 100px 0;
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.benefit-card {
    background: var(--background-light);
    padding: 40px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 2rem;
    margin: 0 auto 25px;
    box-shadow: 0 8px 20px rgba(30, 64, 175, 0.3);
}

.benefit-card h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.benefit-card p {
    color: var(--text-medium);
    line-height: 1.6;
}

.app-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.app-stat {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.1rem;
    color: var(--text-dark);
}

.app-stat i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* Final CTA Section */
.final-cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #1E3A8A 0%, #0891B2 100%);
    color: white;
}

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

.cta-box h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.cta-box p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta-button-large {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: white;
    color: var(--primary-color);
    padding: 20px 50px;
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.cta-button-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.guarantee {
    margin-top: 25px;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* FAQ Section */
.faq-section {
    padding: 100px 0;
    background: var(--background-light);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.faq-item {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.faq-item h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.faq-item p {
    color: var(--text-medium);
    line-height: 1.6;
}

/* Footer */
footer {
    background: #1A1A1A;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
}

.footer-brand p {
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-section .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-stats {
        max-width: 500px;
        margin: 0 auto 50px;
    }
    
    .features-grid,
    .problem-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .feature-card.featured {
        transform: none;
    }
    
    .steps-timeline {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .steps-timeline::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .app-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle .app-name {
        font-weight: 600;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .hero-brand {
        flex-direction: column;
        gap: 10px;
        align-items: center;
        text-align: center;
    }
    
    .hero-icon {
        width: 56px;
        height: 56px;
    }
    
    .phone-mockup {
        max-width: 250px;
    }
    
    .cta-button {
        padding: 16px 30px;
        font-size: 1rem;
    }
    
    .problem-card,
    .feature-card {
        padding: 30px 20px;
    }
    
    .source-link a {
        font-size: 0.8rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .testimonial {
        padding: 25px 20px;
    }
}