:root {
    --bg-dark: #0D0D1A;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --surface: rgba(255, 255, 255, 0.05);
    --surface-hover: rgba(255, 255, 255, 0.1);
    --surface-border: rgba(255, 255, 255, 0.1);
    --primary-gradient: linear-gradient(135deg, #6C3DE8 0%, #C44FD6 100%);
    --accent: #FF6B6B;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    --font-display: 'Inter', -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-display);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(108, 61, 232, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(196, 79, 214, 0.15) 0%, transparent 50%);
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 4rem;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(13, 13, 26, 0.8);
    border-bottom: 1px solid var(--surface-border);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 900;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
}

.logo img {
    height: 40px;
    border-radius: 12px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--accent);
}

.lang-switch {
    display: flex;
    gap: 0.5rem;
    background: var(--surface);
    padding: 0.5rem;
    border-radius: 999px;
    border: 1px solid var(--surface-border);
}

.lang-switch a {
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 700;
}

.lang-switch a.active {
    background: var(--primary-gradient);
    color: white !important;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 16px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    outline: none;
}

.btn:active {
    transform: scale(0.95);
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 10px 20px rgba(108, 61, 232, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 15px 30px rgba(108, 61, 232, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--surface-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover:not(.disabled) {
    background: var(--surface-hover);
    transform: translateY(-2px);
}

.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-lg {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

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

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 107, 107, 0.1);
    color: var(--accent);
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 107, 107, 0.2);
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    perspective: 1000px;
}

.floating-mockup {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: block;
    border-radius: 40px;
    box-shadow: var(--shadow);
    animation: float 6s ease-in-out infinite;
    transform-style: preserve-3d;
}

.glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    filter: blur(100px);
    opacity: 0.3;
    z-index: -1;
}

@keyframes float {
    0% { transform: translateY(0px) rotateX(5deg) rotateY(-5deg); }
    50% { transform: translateY(-20px) rotateX(0deg) rotateY(0deg); }
    100% { transform: translateY(0px) rotateX(5deg) rotateY(-5deg); }
}

/* Glass Card */
.glass-card {
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--surface-border);
    border-radius: 24px;
    padding: 2.5rem;
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-10px);
    background: var(--surface-hover);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

/* Features */
.features {
    padding: 8rem 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.icon-wrapper {
    width: 64px;
    height: 64px;
    background: var(--primary-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 20px rgba(108, 61, 232, 0.2);
}

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

.feature-card p {
    color: var(--text-secondary);
}

/* How It Works */
.how-it-works {
    padding: 8rem 0;
    position: relative;
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.mockup-img {
    width: 100%;
    max-width: 400px;
    border-radius: 40px;
    display: block;
    margin: 0 auto;
    box-shadow: var(--shadow);
}

.steps-list {
    list-style: none;
    margin-top: 3rem;
}

.steps-list li {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.step-num {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.25rem;
    color: var(--accent);
}

.steps-list h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.steps-list p {
    color: var(--text-secondary);
}

/* CTA Section */
.cta {
    padding: 8rem 0;
}

.cta-container {
    text-align: center;
    padding: 5rem 2rem;
    background: linear-gradient(135deg, rgba(108, 61, 232, 0.1) 0%, rgba(196, 79, 214, 0.1) 100%);
    border: 1px solid var(--surface-border);
}

.cta-container h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.cta-container p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

/* Footer */
footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--surface-border);
    background: rgba(0, 0, 0, 0.2);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Animations & Utility Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s var(--spring) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(50px) scale(0.95);
    transition: all 0.8s var(--spring);
}

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

/* Pricing */
.pricing {
    padding: 8rem 0;
}

.pricing-card {
    max-width: 400px;
    margin: 0 auto;
    text-align: center;
    border: 2px solid var(--accent);
    position: relative;
    padding: 3rem;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    background: var(--primary-gradient);
    z-index: -1;
    border-radius: 26px;
}

.pricing-header {
    margin-bottom: 2rem;
}

.price {
    font-size: 4rem;
    font-weight: 900;
    margin: 1rem 0;
    line-height: 1;
}

.currency {
    font-size: 1.5rem;
    vertical-align: top;
    margin-right: 0.25rem;
}

.period {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.trial-badge {
    display: inline-block;
    background: rgba(255, 107, 107, 0.15);
    color: var(--accent);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-weight: 700;
    margin-top: 1rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2.5rem;
    text-align: left;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--surface-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pricing-features li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 900;
}

.btn-full {
    width: 100%;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero h1 { font-size: 3.5rem; }
    .hero-container, .split-layout {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-buttons { justify-content: center; }
    .hero-image { order: -1; }
    .steps-list li {
        text-align: left;
    }
}

@media (max-width: 768px) {
    .nav-links a:not(.lang-switch a) { display: none; }
    .hero h1 { font-size: 2.5rem; }
    .section-title { font-size: 2.5rem; }
    .cta-container h2 { font-size: 2.5rem; }
    .footer-container { flex-direction: column; text-align: center; }
}