/* Base Styles & Variables */
:root {
    --primary-color: #3d5afe;
    --secondary-color: #00e5ff;
    --accent-color: #536dfe;
    --dark-text: #121212;
    --light-text: #ffffff;
    --background-light: #fafafa;
    --background-dark: #121212;
    --background-gradient: linear-gradient(135deg, #3d5afe 0%, #00e5ff 100%);
    --card-bg: #ffffff;
    --shadow: 0 8px 30px rgba(0,0,0,0.12);
    --border-radius: 12px;
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: var(--background-light);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

section {
    padding: 80px 0;
}

h1, h2, h3, h4, h5 {
    margin-bottom: 1rem;
    line-height: 1.3;
    font-weight: 600;
}

h1 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 2.5rem;
    position: relative;
}

h2:after {
    content: '';
    width: 60px;
    height: 3px;
    background: var(--tertiary-color);
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 0;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1.5rem;
}

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 16px 36px;
    background: var(--background-gradient);
    color: white;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    transition: var(--transition);
    text-align: center;
    box-shadow: 0 10px 25px rgba(61, 90, 254, 0.3);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.cta-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(61, 90, 254, 0.4);
    transition: var(--transition);
}

.cta-button:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 50%, rgba(255,255,255,0.1) 100%);
    z-index: -1;
    transform: translateX(-100%);
    transition: transform 0.7s ease;
}

.cta-button:hover:after {
    transform: translateX(100%);
}

/* Header & Navigation */
header {
    background-color: transparent;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background-color: rgba(255,255,255,0.9);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 18px 0;
    border-bottom: 1px solid rgba(0,0,0,0.03);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 40px;
    width: auto;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--dark-text);
    font-weight: 500;
    position: relative;
}

nav ul li a:hover {
    color: var(--primary-color);
}

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

nav ul li a:hover:after {
    width: 100%;
}

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

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--dark-text);
    margin: 5px 0;
    border-radius: 3px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 140px 0 100px;
    background: var(--background-light);
    position: relative;
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    top: -150px;
    right: -100px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(61, 90, 254, 0.03) 0%, rgba(0, 229, 255, 0.05) 100%);
    z-index: -1;
}

.hero:after {
    content: '';
    position: absolute;
    bottom: -200px;
    left: -150px;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: linear-gradient(225deg, rgba(61, 90, 254, 0.04) 0%, rgba(0, 229, 255, 0.07) 100%);
    z-index: -1;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-content {
    flex: 1;
}

.hero-graphic {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.ai-graphic {
    max-width: 400px;
    animation: float 5s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

.highlight {
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
}

.highlight:after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 8px;
    background-color: rgba(107, 136, 255, 0.2);
    z-index: -1;
}

/* Features Section */
.features {
    background-color: var(--background-light);
    position: relative;
    overflow: hidden;
}

.features:before {
    content: '';
    position: absolute;
    width: 1000px;
    height: 1000px;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(0, 229, 255, 0.03) 0%, rgba(83, 109, 254, 0.03) 100%);
    top: -400px;
    left: -300px;
    z-index: -1;
}

.features::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(138, 43, 226, 0.1) 0%, rgba(138, 43, 226, 0) 70%);
    z-index: -1;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 35px 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    height: 100%;
    border: 1px solid rgba(0,0,0,0.03);
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-7px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}

.feature-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--background-gradient);
    z-index: 1;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.feature-card:hover:before {
    transform: scaleX(1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

/* How it works */
.how-it-works {
    text-align: center;
}

.steps {
    display: flex;
    justify-content: space-between;
    max-width: 900px;
    margin: 60px auto 40px;
    position: relative;
}

.steps:before {
    content: '';
    position: absolute;
    top: 40px;
    left: 15%;
    right: 15%;
    height: 3px;
    background: var(--secondary-color);
    z-index: -1;
}

.step {
    position: relative;
    width: 30%;
}

.step-number {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    font-size: 30px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
}

.cta-container {
    margin-top: 60px;
}

/* Testimonials */
.testimonials {
    background-color: var(--background-alt);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    position: relative;
}

.testimonial-card:before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 15px;
    font-size: 80px;
    color: rgba(107, 136, 255, 0.1);
    line-height: 1;
    font-family: Georgia, serif;
}

.quote {
    margin-bottom: 20px;
    font-style: italic;
    position: relative;
    z-index: 1;
}

.user {
    font-weight: bold;
    color: var(--primary-color);
}

/* FAQ Section */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.faq-item {
    background: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* CTA Section */
.cta-section {
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%238a2be2" fill-opacity="0.8" d="M0,96L48,112C96,128,192,160,288,165.3C384,171,480,149,576,149.3C672,149,768,171,864,170.7C960,171,1056,149,1152,133.3C1248,117,1344,107,1392,101.3L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom center, linear-gradient(45deg, #2a0845 0%, var(--primary-color) 100%);
    background-size: 100%, cover;
    color: white;
    text-align: center;
    padding: 100px 0 120px;
}

.cta-section h2 {
    color: white;
}

.cta-section h2:after {
    background: white;
}

.cta-section .cta-button {
    background: white;
    color: var(--primary-color);
}

.cta-section .cta-button:hover {
    background: rgba(255,255,255,0.9);
    color: var(--secondary-color);
}

/* Footer */
footer {
    background-color: var(--background-dark);
    color: var(--light-text);
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

footer:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--primary-color), transparent);
    opacity: 0.3;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    flex: 1;
    min-width: 200px;
}

.footer-logo p {
    margin-top: 15px;
    color: #aaa;
}

.footer-links {
    flex: 2;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-links-column h4 {
    color: white;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.footer-links-column h4:after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
}

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

.footer-links-column ul li {
    margin-bottom: 10px;
}

.footer-links-column ul li a {
    color: #aaa;
    transition: var(--transition);
}

.footer-links-column ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    margin-bottom: 0;
    color: #aaa;
}

.footer-legal a {
    color: #aaa;
    margin-left: 20px;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    h1 {
        font-size: 2.4rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content, .hero-graphic {
        text-align: center;
    }
    
    .ai-graphic {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .steps {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }
    
    .steps:before {
        display: none;
    }
    
    .step {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    
    nav.active {
        transform: translateY(0);
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav ul li {
        margin: 15px 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-links {
        width: 100%;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-legal a {
        margin: 0 10px;
    }
}

@media (max-width: 576px) {
    section {
        padding: 60px 0;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.6rem;
    }
    
    .feature-grid, .testimonial-grid, .faq-grid {
        grid-template-columns: 1fr;
    }
}