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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Glassmorphism Effect */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    padding: 80px 20px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.4) 0%, transparent 70%);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.4) 0%, transparent 70%);
    bottom: -300px;
    right: -300px;
    animation-delay: 5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-content {
    text-align: center;
    z-index: 1;
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out;
}

.badge-text {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
}

.hero-title {
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    margin-bottom: 24px;
    color: white;
    line-height: 1.1;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease-out 0.2s both;
    font-family: 'Space Grotesk', sans-serif;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #f97316 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    animation: gradient-shift 3s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 40px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.4s both;
    font-weight: 400;
}

/* CTA Button - Modern 2025 Style */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    background: white;
    color: var(--primary);
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.8s ease-out 0.6s both;
    border: none;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.cta-button:active {
    transform: translateY(-2px) scale(0.98);
}

.cta-button.large {
    padding: 22px 48px;
    font-size: 1.25rem;
}

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

.cta-button.secondary:hover {
    background: var(--primary-dark);
}

.cta-button svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Styles */
section {
    padding: 120px 0;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    font-family: 'Space Grotesk', sans-serif;
}

/* Problem Section */
.problem {
    background: var(--bg-secondary);
    position: relative;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.problem-card {
    padding: 50px 40px;
    border-radius: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.4s;
}

.problem-card:hover::before {
    opacity: 1;
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.problem-icon {
    font-size: 4rem;
    margin-bottom: 24px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.problem-card h3 {
    font-size: 1.75rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 700;
}

.problem-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.05rem;
}

/* Solution Section */
.solution {
    background: white;
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.solution-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 1.1rem;
    padding: 16px;
    border-radius: 12px;
    transition: all 0.3s;
}

.feature-item:hover {
    background: var(--bg-secondary);
    transform: translateX(8px);
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Chat Preview */
.chat-preview {
    border-radius: 24px;
    padding: 0;
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

.chat-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.chat-info {
    flex: 1;
}

.chat-name {
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.chat-status {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.chat-messages {
    padding: 24px;
    background: var(--bg-secondary);
    min-height: 300px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-message {
    margin-bottom: 0;
    padding: 14px 18px;
    border-radius: 18px;
    max-width: 75%;
    animation: slideIn 0.5s ease-out;
}

.chat-message.user {
    background: var(--primary);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.chat-message.eva {
    background: white;
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
    box-shadow: var(--shadow-sm);
}

.chat-message p {
    margin: 0;
    line-height: 1.5;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* How It Works */
.how-it-works {
    background: var(--bg-secondary);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 50px;
    margin-top: 40px;
}

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

.step-number {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0 auto 32px;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
    position: relative;
}

.step-number::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0.3;
    filter: blur(10px);
    z-index: -1;
}

.step h3 {
    font-size: 1.75rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 700;
}

.step p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Pricing */
.pricing {
    background: white;
}

.pricing-card {
    max-width: 550px;
    margin: 0 auto;
    border-radius: 32px;
    padding: 60px 50px;
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-2xl);
}

.pricing-badge {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--accent), #f472b6);
    color: white;
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(236, 72, 153, 0.4);
}

.pricing-price {
    margin: 40px 0 24px;
}

.price {
    font-size: 4.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.period {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-left: 8px;
    font-weight: 500;
}

.pricing-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 50px;
}

.pricing-features li {
    padding: 16px 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features li svg {
    color: var(--primary);
    flex-shrink: 0;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    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(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.cta-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 24px;
    color: white;
    position: relative;
    z-index: 1;
    font-family: 'Space Grotesk', sans-serif;
}

.cta-subtitle {
    font-size: 1.3rem;
    margin-bottom: 50px;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* Footer — лаконичный, 2025, ФЗ-38 */
.footer {
    background: var(--bg-primary);
    color: var(--text-secondary);
    padding: 48px 0 56px;
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.footer-inner p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.footer-inner p:last-child {
    max-width: 480px;
}

/* Responsive */
@media (max-width: 768px) {
    .solution-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .chat-preview {
        margin-top: 30px;
    }
    
    section {
        padding: 80px 0;
    }
    
    .hero {
        min-height: 90vh;
        padding: 60px 20px;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}