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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark: #1e293b;
    --dark-light: #334155;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --gray-lighter: #e2e8f0;
    --light: #f8fafc;
    --white: #ffffff;
    --danger: #ef4444;
    --success: #22c55e;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    
    --radius-sm: 6px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
}

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

a:hover {
    color: var(--primary-dark);
}

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

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--dark);
    border: 2px solid var(--gray-lighter);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline-light:hover {
    background: var(--white);
    color: var(--primary);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.w-100 {
    width: 100%;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    border-bottom: 1px solid var(--gray-lighter);
}

.header-transparent {
    background: transparent;
    border-bottom: none;
}

.header-transparent .nav-link,
.header-transparent .logo-text {
    color: var(--white);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
    color: var(--dark);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--dark);
    font-weight: 500;
    font-size: 15px;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

.header-transparent .menu-toggle span {
    background: var(--white);
}

/* ===== Mobile Menu ===== */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    z-index: 999;
    padding: 24px;
    flex-direction: column;
}

.mobile-menu.active {
    display: flex;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex: 1;
}

.mobile-nav-link {
    font-size: 18px;
    font-weight: 500;
    color: var(--dark);
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-lighter);
}

.mobile-actions {
    margin-top: 24px;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.2) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 60px;
    align-items: center;
}

.hero-text {
    color: var(--white);
}

.hero-title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    min-height: 125px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-light);
    margin-bottom: 32px;
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

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

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

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
}

.stat-label {
    font-size: 14px;
    color: var(--gray-light);
}

/* ===== Form Card ===== */
.form-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-xl);
}

.form-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark);
}

.form-subtitle {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 24px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    background: var(--white);
    transition: var(--transition);
    margin-bottom: 12px;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-error {
    color: var(--danger);
    font-size: 13px;
    margin-top: -8px;
    margin-bottom: 12px;
    display: none;
}

.form-input.input-error,
.form-select.input-error {
    border-color: var(--danger);
    background: #fff5f5;
}

.form-input.input-error:focus,
.form-select.input-error:focus {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.honeypot-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

.form-agreement {
    margin: 16px 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--gray);
    cursor: pointer;
}

.checkbox-label input {
    margin-top: 3px;
}

.honeypot-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

.section-gray {
    background: var(--light);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--dark);
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray);
}

.section-footer {
    text-align: center;
    margin-top: 48px;
}

/* ===== Features ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 24px;
    color: var(--white);
    font-style: normal;
    font-weight: 600;
    display: block;
}

/* Icon styles using simple text/symbols */
.icon-dashboard::before {
    content: "▦";
}

.icon-sync::before {
    content: "↻";
}

.icon-price::before {
    content: "₽";
}

.icon-analytics::before {
    content: "▲";
}

.icon-api::before {
    content: "{ }";
    font-size: 18px;
}

.icon-team::before {
    content: "⚑";
}

/* Contact page icons */
.icon-phone::before {
    content: "☎";
}

.icon-email::before {
    content: "✉";
}

.icon-location::before {
    content: "📍";
    font-size: 18px;
}

.icon-social::before {
    content: "⚡";
}

.icon-telegram::before {
    content: "T";
}

.icon-vk::before {
    content: "VK";
    font-size: 14px;
}

.icon-youtube::before {
    content: "▶";
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark);
}

.feature-text {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.6;
}

/* ===== Tariffs ===== */
.tariffs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tariff-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow);
    position: relative;
    transition: var(--transition);
}

.tariff-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.tariff-recommended {
    border: 2px solid var(--primary);
    transform: scale(1.05);
}

.tariff-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.tariff-name {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
    text-align: center;
}

.tariff-price {
    text-align: center;
    margin-bottom: 16px;
}

.price-value {
    font-size: 48px;
    font-weight: 700;
    color: var(--dark);
}

.price-currency {
    font-size: 24px;
    font-weight: 600;
}

.price-period {
    font-size: 16px;
    color: var(--gray);
}

.tariff-description {
    text-align: center;
    color: var(--gray);
    font-size: 14px;
    margin-bottom: 24px;
}

.tariff-features {
    list-style: none;
    margin-bottom: 32px;
}

.tariff-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-lighter);
    font-size: 14px;
    color: var(--dark-light);
}

.tariff-features li::before {
    content: '✓';
    color: var(--secondary);
    margin-right: 10px;
    font-weight: 600;
}

/* ===== Cases ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-content {
    padding: 24px;
}

.case-logo {
    height: 32px;
    margin-bottom: 16px;
}

.case-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.case-client {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 12px;
}

.case-excerpt {
    font-size: 14px;
    color: var(--dark-light);
    margin-bottom: 16px;
    line-height: 1.5;
}

.case-results {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
    padding: 12px;
    background: var(--light);
    border-radius: var(--radius);
}

.result-item {
    display: flex;
    flex-direction: column;
}

.result-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary);
}

.result-label {
    font-size: 12px;
    color: var(--gray);
}

.case-link {
    font-weight: 500;
    font-size: 14px;
}

/* ===== Reviews ===== */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
}

.review-rating {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.icon-star {
    width: 20px;
    height: 20px;
    background: var(--gray-lighter);
    clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}

.icon-star.active {
    background: var(--accent);
}

.review-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--dark-light);
    margin-bottom: 20px;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-photo {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--dark);
}

.author-company {
    font-size: 14px;
    color: var(--gray);
}

/* ===== Demo Section ===== */
.demo-content {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 60px;
    align-items: center;
}

.demo-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark);
}

.demo-description {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 24px;
    line-height: 1.7;
}

.demo-benefits {
    list-style: none;
}

.demo-benefits li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
}

.demo-benefits i {
    width: 24px;
    height: 24px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 12px;
}

/* ===== Blog ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.blog-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.blog-image {
    display: block;
    height: 200px;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.blog-card:hover .blog-image img {
    transform: scale(1.05);
}

.blog-content {
    padding: 24px;
}

.blog-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.blog-category {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
}

.blog-date {
    font-size: 12px;
    color: var(--gray);
}

.blog-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
}

.blog-title a {
    color: var(--dark);
}

.blog-title a:hover {
    color: var(--primary);
}

.blog-excerpt {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 16px;
}

.blog-link {
    font-weight: 500;
    font-size: 14px;
}

/* ===== CTA Section ===== */
.cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    text-align: center;
}

.cta-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-text {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 16px;
}

.footer-desc {
    color: var(--gray-light);
    font-size: 14px;
    margin-bottom: 20px;
}

.footer-contacts {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-light);
    font-size: 14px;
}

.footer-contact:hover {
    color: var(--white);
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: var(--gray-light);
    font-size: 14px;
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--dark-light);
    text-align: center;
    color: var(--gray-light);
    font-size: 14px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-form {
        max-width: 480px;
        margin: 0 auto;
    }
    
    .features-grid,
    .tariffs-grid,
    .cases-grid,
    .reviews-grid,
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .demo-content {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav,
    .header-actions {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 36px;
        min-height: 87px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .features-grid,
    .tariffs-grid,
    .cases-grid,
    .reviews-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .tariff-recommended {
        transform: none;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .cta-title {
        font-size: 28px;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}