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

:root {
    --primary-blue: #0ea5e9;
    --secondary-blue: #0284c7;
    --dark-blue: #075985;
    --darker-blue: #0c4a6e;
    --darkest: #0a1628;
    --accent-cyan: #06b6d4;
    --text-light: #e0f2fe;
    --text-muted: #94a3b8;
    --gradient-1: linear-gradient(135deg, #0ea5e9 0%, #0284c7 50%, #075985 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 50%, #0284c7 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--darkest);
    color: var(--text-light);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Animated Background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.bg-animation::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    top: -250px;
    left: -250px;
    animation: float 20s ease-in-out infinite;
}

.bg-animation::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    bottom: -300px;
    right: -300px;
    animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(50px, 50px) scale(1.1); }
}

/* Particles */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--primary-blue);
    border-radius: 50%;
    opacity: 0.3;
    animation: particle-float 15s infinite;
    will-change: transform, opacity;
}

@keyframes particle-float {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(14, 165, 233, 0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.logo:hover,
.logo:focus {
    opacity: 0.8;
    outline: 2px solid var(--primary-blue);
    outline-offset: 4px;
    border-radius: 4px;
}

.cta-button {
    padding: 0.75rem 2rem;
    background: var(--gradient-1);
    border: none;
    border-radius: 50px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.cta-button:hover,
.cta-button:focus {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(14, 165, 233, 0.5);
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a:focus {
    color: var(--primary-blue);
    outline: 2px solid var(--primary-blue);
    outline-offset: 4px;
    border-radius: 4px;
}

.nav-menu a:hover::after,
.nav-menu a:focus::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 5px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-menu-toggle:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 4px;
    border-radius: 4px;
}

/* Main Content */
main {
    position: relative;
    z-index: 2;
}

section {
    padding: 6rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding-top: 80px;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    background: linear-gradient(135deg, #e0f2fe 0%, #0ea5e9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn-primary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    background: var(--gradient-1);
    border: none;
    border-radius: 50px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.4);
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.6);
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.5);
}

.btn-primary.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn-primary.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-secondary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    background: transparent;
    border: 2px solid var(--primary-blue);
    border-radius: 50px;
    color: var(--primary-blue);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: rgba(14, 165, 233, 0.1);
    transform: translateY(-3px);
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.btn-secondary:active {
    transform: translateY(-1px);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* What is Section */
.what-is {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    align-items: center;
}

.what-is-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.what-is-content p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

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

.feature-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-muted);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
    font-size: 1.2rem;
}

.what-is-visual {
    position: relative;
    height: 400px;
    background: var(--gradient-2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 60px rgba(14, 165, 233, 0.3);
    overflow: hidden;
}

.what-is-visual::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.what-is-visual .phone-mockup {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.what-is-visual .phone-mockup svg {
    width: 100%;
    max-width: 280px;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    animation: float-phone 6s ease-in-out infinite;
}

@keyframes float-phone {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

/* Benefits Section */
.benefits {
    background: rgba(14, 165, 233, 0.05);
    border-radius: 30px;
    margin: 4rem auto;
    padding: 4rem 3rem;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.benefit-card {
    background: rgba(14, 165, 233, 0.05);
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-blue);
    box-shadow: 0 10px 40px rgba(14, 165, 233, 0.3);
}

.benefit-card:hover::before {
    opacity: 0.1;
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.benefit-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.benefit-card p {
    color: var(--text-muted);
    position: relative;
    z-index: 1;
}

/* How It Works */
.how-it-works {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

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

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1.5rem;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step p {
    color: var(--text-muted);
}

/* Pricing Section */
.pricing {
    background: rgba(14, 165, 233, 0.05);
    border-radius: 30px;
    padding: 4rem 3rem;
    text-align: center;
}

.pricing-highlight {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--gradient-1);
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

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

.pricing-content h3 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.pricing-content p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.price-tag {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.pricing-trial {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.pricing-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-light);
    padding: 0.5rem;
}

.check-icon {
    color: var(--primary-blue);
    font-weight: bold;
    font-size: 1.2rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 50%;
    flex-shrink: 0;
}

.btn-pricing-cta {
    font-size: 1.2rem;
    padding: 1.2rem 3rem;
}

.btn-demo-cta {
    font-size: 1.2rem;
    padding: 1.2rem 3rem;
    background: white;
    color: var(--primary-blue);
}

.btn-demo-cta:hover,
.btn-demo-cta:focus {
    background: rgba(255, 255, 255, 0.9);
    color: var(--secondary-blue);
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding: 6rem 5%;
    background: var(--gradient-2);
    border-radius: 30px;
    margin: 4rem auto;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

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

.cta-section .content {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1.5rem;
    color: white;
}

.cta-section p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Footer */
footer {
    padding: 4rem 5% 2rem;
    border-top: 1px solid rgba(14, 165, 233, 0.1);
    color: var(--text-muted);
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    color: var(--text-light);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section h4 {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.footer-tagline {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover,
.footer-links a:focus {
    color: var(--primary-blue);
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: 4px;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.social-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-link:hover,
.social-link:focus {
    color: var(--primary-blue);
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: 4px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(14, 165, 233, 0.1);
    font-size: 0.9rem;
}

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

.fade-in {
    animation: fadeInUp 0.8s ease both;
}

/* Responsive */
@media (max-width: 768px) {
    section {
        padding: 4rem 3%;
    }

    nav {
        padding: 1rem 3%;
    }

    nav .container {
        position: relative;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }

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

    .nav-menu a {
        font-size: 1.2rem;
        width: 100%;
        padding: 0.75rem 0;
    }

    .hero {
        padding-top: 100px;
    }

    .benefits-grid,
    .how-it-works {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .social-links {
        flex-direction: row;
        justify-content: center;
    }

    .what-is {
        grid-template-columns: 1fr;
    }

    .what-is-visual {
        height: 300px;
    }
}

/* Scroll animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Accessibility Improvements */
*:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: 4px;
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Skip to main content link for screen readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-blue);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 10000;
}

.skip-link:focus {
    top: 0;
}

/* Improve contrast for better accessibility */
a {
    color: var(--primary-blue);
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .bg-animation::before,
    .bg-animation::after {
        animation: none !important;
    }

    .particle {
        animation: none !important;
    }
}

/* Active nav link styling */
.nav-menu a.active {
    color: var(--primary-blue);
}

.nav-menu a.active::after {
    width: 100%;
}