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

:root {
    --primary-color: #00D9FF;
    --primary-dark: #00B8D4;
    --secondary-color: #7B68EE;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --success-color: #4CAF50;
    --gradient-primary: linear-gradient(135deg, #00D9FF 0%, #7B68EE 100%);
    --gradient-hero: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(123, 104, 238, 0.1) 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
}

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

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

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Hero Section */
.hero {
    background: var(--gradient-hero);
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(123, 104, 238, 0.1) 0%, transparent 70%);
    animation: pulse-bg 8s ease-in-out infinite;
}

@keyframes pulse-bg {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.2); opacity: 0.5; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.1rem;
    color: var(--text-dark);
}

.feature-icon {
    font-size: 1.5rem;
}

/* CTA Button */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    background: var(--gradient-primary);
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button-large {
    padding: 24px 50px;
    font-size: 1.4rem;
}

.telegram-icon {
    font-size: 1.5rem;
}

.pulse {
    animation: pulse-button 2s ease-in-out infinite;
}

@keyframes pulse-button {
    0%, 100% { box-shadow: var(--shadow-md); }
    50% { box-shadow: 0 4px 24px rgba(0, 217, 255, 0.4); }
}

.cta-note {
    margin-top: 1rem;
    font-size: 0.95rem;
    color: var(--text-light);
}

/* Phone Mockup */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 320px;
    height: 640px;
    background: linear-gradient(145deg, #2c2c2c, #1a1a1a);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: float 6s ease-in-out infinite;
}

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

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 30px;
    background: #1a1a1a;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 32px;
    overflow: hidden;
}

.chat-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.chat-header {
    background: var(--gradient-primary);
    color: white;
    padding: 50px 20px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.bot-avatar {
    font-size: 2rem;
}

.bot-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.chat-messages {
    flex: 1;
    padding: 20px;
    background: #f0f0f0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    display: flex;
}

.bot-message {
    justify-content: flex-start;
}

.user-message {
    justify-content: flex-end;
}

.message-bubble {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 0.95rem;
    line-height: 1.4;
}

.bot-message .message-bubble {
    background: white;
    box-shadow: var(--shadow-sm);
}

.user-message .message-bubble {
    background: var(--primary-color);
    color: white;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 3rem;
}

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

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-md);
}

.step h3 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: var(--text-dark);
}

.step p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon-large {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Stats Section */
.stats {
    background: var(--gradient-primary);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Testimonials */
.testimonials {
    background: var(--bg-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-color);
}

.testimonial-rating {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    color: var(--text-dark);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.testimonial-author strong {
    color: var(--text-dark);
    font-size: 1.1rem;
}

.testimonial-author span {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* CTA Section */
.cta-section {
    background: var(--gradient-hero);
    text-align: center;
}

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

.cta-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.cta-text {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
}

/* FAQ Section */
.faq {
    background: var(--bg-white);
}

.faq-list {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-question {
    padding: 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.faq-question h3 {
    font-size: 1.2rem;
    margin: 0;
    color: var(--text-dark);
}

.faq-toggle {
    font-size: 1.8rem;
    color: var(--primary-color);
    font-weight: 300;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 24px 24px;
    color: var(--text-light);
    line-height: 1.7;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 50px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-section a {
    color: var(--primary-color);
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .phone-mockup {
        width: 280px;
        height: 560px;
    }

    .section-title {
        font-size: 2rem;
    }

    .cta-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 60px 0 80px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .cta-button {
        padding: 16px 32px;
        font-size: 1.1rem;
    }

    .cta-button-large {
        padding: 20px 40px;
        font-size: 1.2rem;
    }

    section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .steps {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-label {
        font-size: 1rem;
    }

    .phone-mockup {
        width: 260px;
        height: 520px;
    }

    .cta-title {
        font-size: 1.8rem;
    }

    .cta-text {
        font-size: 1.1rem;
    }
}