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

:root {
    /* Color Variables */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background: #ffffff;
    --background-light: #f9fafb;
    --background-dark: #f3f4f6;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* 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;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    font-size: var(--font-size-base);
}

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

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* Header and Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
}

.logo-text {
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.nav-menu {
    display: none;
    align-items: center;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link.cta-button {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.nav-link.cta-button:hover {
    background: var(--primary-hover);
    color: white;
}

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    line-height: 1.5;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--background-light);
    border-color: var(--primary-color);
}

.btn.large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* Hero Section */
.hero {
    padding-top: 120px;
    padding-bottom: var(--spacing-4xl);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    min-height: 70vh;
}

@media (min-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-4xl);
    }
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--font-size-5xl);
    }
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
        gap: var(--spacing-lg);
    }
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.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(--text-secondary);
}

.hero-image {
    text-align: center;
}

.phone-mockup {
    max-width: 400px;
    width: 100%;
    height: auto;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .section-title {
        font-size: var(--font-size-4xl);
    }
}

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

/* Features Section */
.features {
    padding: var(--spacing-4xl) 0;
    background: var(--background);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--background);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 32px;
    height: 32px;
    filter: brightness(0) invert(1);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* About Section */
.about {
    padding: var(--spacing-4xl) 0;
    background: var(--background-light);
}
.insights {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));

}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-4xl);
    }
}

.about-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.about-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.about-features {
    list-style: none;
}

.about-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

.about-image img {
    width: 100%;
    height: auto;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-4xl) 0;
    background: var(--background);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background: var(--background);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.testimonial-rating {
    color: var(--accent-color);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.testimonial-text {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

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

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
    display: block;
}

.author-title {
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

/* Download Section */
.download {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

@media (min-width: 768px) {
    .download-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-4xl);
    }
}

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

@media (min-width: 768px) {
    .download-title {
        font-size: var(--font-size-4xl);
    }
}

.download-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
    line-height: 1.6;
}

.download-buttons {
    text-align: left;
}

.download-note {
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.app-screens {
    width: 100%;
    height: auto;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    background: rgba(255, 255, 255, 0.1);
}

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

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 2fr;
        gap: var(--spacing-4xl);
    }
}

.footer-brand {
    text-align: center;
}

@media (min-width: 768px) {
    .footer-brand {
        text-align: left;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    justify-content: center;
}

@media (min-width: 768px) {
    .footer-logo {
        justify-content: flex-start;
    }
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-2xl);
}

.footer-title {
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.footer-link {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    text-align: center;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

.footer-social {
    display: flex;
    gap: var(--spacing-lg);
}

.social-link {
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-fast);
}

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

/* Mobile Menu Styles */
@media (max-width: 767px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--background);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border-light);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.mobile-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link.cta-button {
        width: 100%;
        text-align: center;
        margin-top: var(--spacing-md);
    }
}

/* Header Scroll Effects */
.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header {
    transition: all var(--transition-normal);
}

/* Animation Classes */
.animate-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

.feature-card,
.testimonial-card,
.about-content > *,
.section-header {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.feature-card.animate-in,
.testimonial-card.animate-in,
.about-content.animate-in > *,
.section-header.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animations for feature cards */
.feature-card:nth-child(1).animate-in { animation-delay: 0.1s; }
.feature-card:nth-child(2).animate-in { animation-delay: 0.2s; }
.feature-card:nth-child(3).animate-in { animation-delay: 0.3s; }
.feature-card:nth-child(4).animate-in { animation-delay: 0.4s; }
.feature-card:nth-child(5).animate-in { animation-delay: 0.5s; }
.feature-card:nth-child(6).animate-in { animation-delay: 0.6s; }

/* Loading states */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced hover effects */
.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    transition: transform var(--transition-normal);
}

.testimonial-card:hover .author-avatar {
    transform: scale(1.1);
    transition: transform var(--transition-normal);
}

/* Improved accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-primary {
        border: 2px solid;
    }
    
    .feature-card,
    .testimonial-card {
        border-width: 2px;
    }
}

/* Dark mode support (if needed) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-light: #9ca3af;
        --background: #111827;
        --background-light: #1f2937;
        --background-dark: #374151;
        --border-color: #374151;
        --border-light: #4b5563;
    }
    
    .hero {
        background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    }
    
    .header {
        background: rgba(17, 24, 39, 0.95);
    }
    
    .header.scrolled {
        background: rgba(17, 24, 39, 0.98);
    }
}

/* Responsive Design */
@media (max-width: 640px) {
    .hero-cta {
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: left;
    }
    
    .stat {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .testimonials-grid {
        gap: var(--spacing-lg);
    }
}

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

.hero-title,
.hero-subtitle,
.hero-cta {
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    animation-delay: 0.2s;
}

.hero-cta {
    animation-delay: 0.4s;
}

/* Utility Classes */
.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;
}

/* Focus Styles */
.btn:focus,
.nav-link:focus,
.footer-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .header,
    .footer {
        display: none;
    }
    
    .hero {
        padding-top: 0;
    }
}