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

:root {
    /* Stripe Colors (2025) */
    --primary-50: #f8f7ff;
    --primary-100: #f0eeff;
    --primary-200: #e1deff;
    --primary-300: #c7c2ff;
    --primary-400: #a69aff;
    --primary-500: #635bff;
    --primary-600: #5a52f5;
    --primary-700: #4c44e1;
    --primary-800: #3d36c7;
    --primary-900: #2d2694;
    
    /* Grayscale (Stripe 2025) */
    --gray-50: #fafafa;
    --gray-100: #f4f4f5;
    --gray-200: #e4e4e7;
    --gray-300: #d4d4d8;
    --gray-400: #a1a1aa;
    --gray-500: #71717a;
    --gray-600: #52525b;
    --gray-700: #3f3f46;
    --gray-800: #27272a;
    --gray-900: #18181b;
    
    /* Semantic colors */
    --background: #ffffff;
    --foreground: var(--gray-900);
    --muted: var(--gray-100);
    --muted-foreground: var(--gray-500);
    --border: var(--gray-200);
    --input: var(--gray-100);
    --ring: var(--primary-500);
    
    /* 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-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    --spacing-32: 8rem;
    
    /* Border radius */
    --radius-sm: 0.125rem;
    --radius: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --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);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--foreground);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.025em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    color: white;
    border-color: var(--primary-600);
    box-shadow: 0 2px 4px rgba(99, 91, 255, 0.2);
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-800) 100%);
    border-color: var(--primary-700);
    box-shadow: 0 4px 12px rgba(99, 91, 255, 0.3);
    transform: translateY(-1px);
}

.btn-ghost {
    background-color: transparent;
    color: var(--foreground);
    border-color: var(--border);
    transition: all 0.2s ease;
}

.btn-ghost:hover {
    background-color: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary-700);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.navbar-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--foreground);
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    align-items: center;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--muted-foreground);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: var(--spacing-2) var(--spacing-3);
    color: var(--muted-foreground);
    text-decoration: none;
    font-size: var(--font-size-sm);
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: var(--muted);
    color: var(--foreground);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

.mobile-menu-toggle span {
    width: 20px;
    height: 2px;
    background-color: var(--foreground);
    transition: all 0.2s ease;
}

/* Hero Section */
.hero {
    padding: var(--spacing-24) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--background) 100%);
    position: relative;
    overflow: hidden;
}

/* Hero animated lines background */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(90deg, rgba(99, 91, 255, 0.1) 1px, transparent 1px),
        linear-gradient(0deg, rgba(99, 91, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: heroLines 20s linear infinite;
    pointer-events: none;
    z-index: 1;
}

@keyframes heroLines {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* Additional floating lines */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(45deg, rgba(99, 91, 255, 0.05) 1px, transparent 1px),
        linear-gradient(-45deg, rgba(99, 91, 255, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
    animation: heroLinesDiagonal 15s linear infinite reverse;
    pointer-events: none;
    z-index: 1;
}

@keyframes heroLinesDiagonal {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(30px, 30px);
    }
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-badge {
    margin-bottom: var(--spacing-6);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-3);
    background-color: var(--primary-100);
    color: var(--primary-800);
    border-radius: var(--radius-2xl);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid var(--primary-200);
}

.hero-title {
    font-size: 3.45rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
    color: var(--foreground);
    letter-spacing: -0.04em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Typewriter Effect */
#changing-word {
    position: relative;
    display: inline-block;
    min-width: 1ch;
}

#changing-word::after {
    content: '|';
    animation: blink 1s infinite;
    color: var(--primary-600);
    font-weight: normal;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    font-size: var(--font-size-xl);
    color: var(--muted-foreground);
    margin-bottom: var(--spacing-8);
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-12);
}

.demo-duration {
    font-size: var(--font-size-xs);
    color: var(--muted-foreground);
    margin-left: var(--spacing-1);
}

.hero-trusted {
    margin-top: var(--spacing-16);
}

.trusted-text {
    font-size: var(--font-size-sm);
    color: var(--muted-foreground);
    margin-bottom: var(--spacing-6);
}

.trusted-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-8);
    flex-wrap: wrap;
}

.logo-item {
    color: var(--muted-foreground);
    font-size: var(--font-size-sm);
    font-weight: 500;
    opacity: 0.6;
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--foreground);
    margin-bottom: var(--spacing-4);
    letter-spacing: -0.03em;
}

.section-description {
    font-size: var(--font-size-xl);
    color: var(--muted-foreground);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: var(--spacing-24) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-8);
}

.feature-card {
    padding: var(--spacing-8);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background-color: var(--background);
    transition: all 0.2s ease;
}

.feature-card:hover {
    border-color: var(--primary-200);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background-color: var(--primary-100);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
    color: var(--primary-600);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--foreground);
    margin-bottom: var(--spacing-3);
}

.feature-description {
    color: var(--muted-foreground);
    line-height: 1.6;
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-24) 0;
    background-color: var(--gray-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-8);
}

.testimonial-card {
    padding: var(--spacing-8);
    background-color: var(--background);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
}

.testimonial-quote {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    color: var(--foreground);
    margin-bottom: var(--spacing-6);
    font-style: italic;
}

.testimonial-author strong {
    color: var(--foreground);
    font-weight: 600;
}

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

/* Pricing Section */
.pricing {
    padding: var(--spacing-24) 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: var(--spacing-8);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background-color: var(--background);
    transition: all 0.2s ease;
}

.pricing-card:hover {
    border-color: var(--primary-200);
    box-shadow: var(--shadow-md);
}

.pricing-featured {
    border-color: var(--primary-500);
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-500);
    color: var(--background);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-2xl);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.pricing-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--foreground);
    margin-bottom: var(--spacing-3);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-1);
}

.price-amount {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--foreground);
}

.price-period {
    font-size: var(--font-size-lg);
    color: var(--muted-foreground);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-8);
}

.pricing-features li {
    padding: var(--spacing-3) 0;
    color: var(--muted-foreground);
    border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li:before {
    content: "✓";
    color: var(--primary-500);
    font-weight: 600;
    margin-right: var(--spacing-3);
}

/* Footer */
.footer {
    padding: var(--spacing-16) 0 var(--spacing-8);
    background-color: var(--gray-50);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--foreground);
    margin-bottom: var(--spacing-4);
}

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

.footer-links li {
    margin-bottom: var(--spacing-2);
}

.footer-links a {
    color: var(--muted-foreground);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--foreground);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--border);
    font-size: var(--font-size-sm);
    color: var(--muted-foreground);
    text-align: center;
}

.footer-support {
    color: var(--muted-foreground);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-support:hover {
    color: var(--foreground);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Loading states */
.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Header scroll effect */
.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

/* Mobile menu styles - Stripe inspired */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 50;
    backdrop-filter: blur(4px);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 400px;
    background-color: var(--background);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 51;
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
}

.mobile-menu-panel.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-6);
    border-bottom: 1px solid var(--border);
}

.mobile-menu-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--muted-foreground);
    transition: all 0.2s ease;
}

.mobile-menu-close:hover {
    background-color: var(--muted);
    color: var(--foreground);
}

.mobile-menu-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-6);
}

.mobile-nav-section {
    margin-bottom: var(--spacing-8);
}

.mobile-nav-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--muted-foreground);
    text-transform: uppercase;
    letter-spacing: 0.01em;
    margin-bottom: var(--spacing-4);
}

.mobile-nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-links li {
    margin-bottom: var(--spacing-1);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--foreground);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
    font-weight: 500;
}

.mobile-nav-link:hover {
    background-color: var(--muted);
    color: var(--primary-600);
}

.mobile-menu-actions {
    padding: var(--spacing-6);
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

body.menu-open {
    overflow: hidden;
}

/* Demo Modal */
.demo-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.demo-modal.active {
    opacity: 1;
    visibility: visible;
}

.demo-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.demo-modal-content {
    position: relative;
    background: var(--background);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 95vw;
    max-height: 95vh;
    width: 1200px;
    height: 750px;
    display: flex;
    flex-direction: column;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.demo-modal.active .demo-modal-content {
    transform: scale(1);
}

.demo-modal-close {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    width: 40px;
    height: 40px;
    background: var(--muted);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted-foreground);
    transition: all 0.2s ease;
    z-index: 1;
}

.demo-modal-close:hover {
    background: var(--gray-200);
    color: var(--foreground);
}

.demo-modal-body {
    flex: 1;
    padding: 0;
    overflow: hidden;
    height: 100%;
}

.demo-modal-body iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: var(--radius-xl);
}

body.demo-modal-open {
    overflow: hidden;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .pricing-grid {
        gap: var(--spacing-4);
        max-width: 900px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-4);
    }
    
    .navbar-menu {
        display: none;
    }
    
    .navbar-actions {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.15rem;
    }
    
    .hero-description {
        font-size: var(--font-size-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        gap: var(--spacing-3);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .trusted-logos {
        gap: var(--spacing-4);
    }
    
    .features-grid,
    .testimonials-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-featured {
        transform: none;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }
    
    .demo-modal-content {
        width: 96vw;
        height: 80vh;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-16) 0;
    }
    
    .hero-title {
        font-size: 1.725rem;
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .features,
    .testimonials,
    .pricing {
        padding: var(--spacing-16) 0;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .demo-modal-content {
        width: 98vw;
        height: 85vh;
        max-width: none;
        border-radius: var(--radius-lg);
    }
    
    .demo-modal-header {
        padding: var(--spacing-4);
    }
    
    .demo-modal-header h3 {
        font-size: var(--font-size-lg);
    }
}