/* =====================================================
   AI Бот Студия - Landing Page Styles
   ===================================================== */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --accent-green: #00ff88;
    --accent-blue: #00d4ff;
    --text-primary: #ffffff;
    --text-secondary: #8892a0;
    --text-muted: #5a6270;
    --border-color: #2a2a3a;

    /* Gradients */
    --gradient-accent: linear-gradient(135deg, #00ff88, #00d4ff);
    --gradient-glow: linear-gradient(135deg, rgba(0, 255, 136, 0.2), rgba(0, 212, 255, 0.2));

    /* Shadows */
    --shadow-glow: 0 0 30px rgba(0, 255, 136, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);

    /* Spacing */
    --container-width: 1200px;
    --section-padding: 100px;
    --header-height: 80px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition-medium);
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--bg-primary);
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.125rem;
    border-radius: 16px;
}

.btn-icon {
    font-size: 1.25em;
}

/* =====================================================
   Header
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-icon {
    width: 32px;
    height: 32px;
    object-fit: cover;
    border-radius: 70%;
}

/* Navigation */
.nav-list {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::after {
    width: 100%;
}

/* Header CTA */
.header-cta {
    padding: 10px 20px;
    font-size: 0.875rem;
}

/* Burger Menu */
.burger {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.burger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.burger.active span:nth-child(2) {
    opacity: 0;
}

.burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    padding: 40px 20px;
    transform: translateX(100%);
    transition: var(--transition-medium);
    z-index: 999;
}

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

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.mobile-nav-link {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.mobile-nav-link:hover {
    color: var(--accent-green);
}

.mobile-cta {
    width: 100%;
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 800px;
    padding: 60px 0;
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* =====================================================
   Services Section
   ===================================================== */
.services {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

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

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 30px;
    transition: var(--transition-medium);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-green);
    box-shadow: 0 20px 40px rgba(0, 255, 136, 0.1);
}

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-glow);
    border-radius: 16px;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--accent-green);
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.service-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.service-features li::before {
    content: '✓';
    color: var(--accent-green);
    font-weight: 600;
}

/* =====================================================
   Advantages Section
   ===================================================== */
.advantages {
    padding: var(--section-padding) 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.advantage-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: var(--transition-medium);
}

.advantage-card:hover {
    border-color: var(--accent-blue);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.advantage-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.advantage-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* =====================================================
   Cases Section
   ===================================================== */
.cases {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.case-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition-medium);
}

.case-card:hover {
    border-color: var(--accent-green);
    background: rgba(0, 255, 136, 0.05);
}

.case-avatar {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--gradient-glow);
}

.case-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.case-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.case-username {
    font-weight: 600;
    color: var(--text-primary);
}

.case-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.case-arrow {
    font-size: 1.25rem;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.case-card:hover .case-arrow {
    color: var(--accent-green);
    transform: translateX(4px);
}

/* =====================================================
   Pricing Section
   ===================================================== */
.pricing {
    padding: var(--section-padding) 0;
}

.pricing-card {
    max-width: 500px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 50px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
}

.pricing-header {
    margin-bottom: 40px;
}

.pricing-label {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-glow);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-green);
    margin-bottom: 20px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
}

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

.pricing-value {
    font-size: 4rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.pricing-features {
    text-align: left;
    margin-bottom: 30px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-check {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-glow);
    border-radius: 50%;
    font-size: 0.75rem;
    color: var(--accent-green);
    font-weight: 700;
}

.pricing-note {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.pricing-btn {
    width: 100%;
}

/* =====================================================
   Contact Section
   ===================================================== */
.contact {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.9375rem;
}

.form-input {
    width: 100%;
    padding: 16px 20px;
    font-family: var(--font-family);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    outline: none;
    transition: var(--transition-fast);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:focus {
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    width: 100%;
    margin-top: 10px;
}

.form-submit .btn-loading {
    display: none;
}

.form-submit.loading .btn-text {
    display: none;
}

.form-submit.loading .btn-loading {
    display: inline;
}

.form-privacy {
    margin-top: 16px;
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-align: center;
}

/* Form Success State */
.form-success {
    display: none;
    text-align: center;
    padding: 60px 20px;
    max-width: 500px;
    margin: 0 auto;
}

.form-success.show {
    display: block;
}

.contact-form.hidden {
    display: none;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    border-radius: 50%;
    font-size: 2rem;
    color: var(--bg-primary);
}

.success-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.success-text {
    color: var(--text-secondary);
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.footer-tagline {
    margin-top: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-telegram {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-weight: 500;
    transition: var(--transition-fast);
}

.footer-telegram:hover {
    border-color: var(--accent-blue);
    background: rgba(0, 212, 255, 0.1);
}

.telegram-icon {
    font-size: 1.25rem;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.copyright {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* =====================================================
   Animations
   ===================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .nav {
        display: none;
    }

    .header-cta {
        display: none;
    }

    .burger {
        display: flex;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
        --header-height: 70px;
    }

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

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-stats {
        gap: 30px;
    }

    .services-grid,
    .advantages-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card {
        padding: 40px 24px;
    }

    .pricing-value {
        font-size: 3rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.75rem;
    }

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

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

    .stat-value {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }
}