/* Базовые стили и переменные */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #0f172a;
    --secondary-hover: #1e293b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-main: #334155;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --radius: 8px;
    --transition: all 0.25s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-weight: 500;
    font-size: 15px;
    border-radius: var(--radius);
    text-decoration: none;
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

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

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

.btn--secondary:hover {
    background-color: var(--secondary-hover);
}

.btn--outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-dark);
}

.btn--outline:hover {
    background-color: rgba(15, 23, 42, 0.05);
}

.btn--block {
    display: block;
    width: 100%;
}

.section-title {
    font-size: 32px;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 48px;
    font-weight: 700;
}

/* Навигация */
.header {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 18px;
}

.logo__icon {
    width: 24px;
    height: 24px;
    background-color: var(--primary-color);
    border-radius: 4px;
    position: relative;
}

.logo__icon::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    border: 2px solid white;
    top: 5px;
    left: 5px;
    transform: rotate(45deg);
}

.nav {
    display: flex;
    gap: 24px;
}

.nav__link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
}

.nav__link:hover {
    color: var(--text-dark);
}

/* Hero Section */
.hero {
    background-color: var(--bg-white);
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

.hero__container {
    display: flex;
    align-items: center;
    gap: 48px;
}

.hero__content {
    flex: 1;
}

.hero__title {
    font-size: 40px;
    line-height: 1.2;
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 20px;
}

.hero__description {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.hero__actions {
    display: flex;
    gap: 16px;
}

.hero__image-wrapper {
    flex: 1;
}

/* Заглушка под картинку */
.image-placeholder {
    background-color: #e7e8ef;
    border: 2px #7e7e7e;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 380px;
    position: relative;
    padding: 20px;
}

.placeholder-text {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.mock-flowchart {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.mock-node {
    padding: 8px 16px;
    background: white;
    border: 2px solid var(--primary-color);
    font-weight: 600;
    font-size: 13px;
    color: var(--text-dark);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
}

.mock-node--start { border-radius: 20px; }
.mock-node--process { border-radius: 4px; }
.mock-node--condition { border-color: #eab308; }

.mock-line {
    width: 2px;
    height: 24px;
    background-color: var(--primary-color);
    position: relative;
}

.mock-line::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -4px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--primary-color);
}

/* Раздел О продукте */
.about {
    padding: 80px 0;
}

.about__grid {
    display: flex;
    gap: 24px;
}

.about-card {
    flex: 1;
    background-color: var(--bg-white);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.about-card h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 12px;
}

/* Инструкция использования */
.how-it-works {
    padding: 60px 0;
    background-color: rgba(241, 245, 249, 0.5);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.steps-grid {
    display: flex;
    gap: 32px;
}

.step-item {
    flex: 1;
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    color: white;
    font-size: 20px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.step-item h4 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 8px;
}

/* Тарифная сетка */
.pricing {
    padding: 80px 0;
}

.pricing__grid {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.price-card {
    flex: 1;
    max-width: 360px;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 32px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.price-card--popular {
    border-color: var(--primary-color);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
}

.badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background-color: #dbeafe;
    color: var(--primary-color);
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
}

.price-card__name {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.price-card__price {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.price-card__price span {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 400;
}

.price-card__desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
    min-height: 44px;
}

.price-card__features {
    list-style: none;
    margin-bottom: 32px;
    flex-grow: 1;
}

.price-card__features li {
    font-size: 14px;
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.price-card__features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: 700;
}

/* Блок контактов */
.contact {
    background-color: var(--secondary-color);
    color: var(--bg-white);
    padding: 60px 0;
    border-radius: 12px;
    margin: 0 auto 40px;
    max-width: calc(100% - 40px);
}

.contact__container {
    display: flex;
    gap: 48px;
    align-items: center;
}

.contact__info {
    flex: 1;
}

.contact__title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact__text {
    color: #94a3b8;
}

.contact__box {
    flex: 1;
    background-color: var(--bg-white);
    padding: 32px;
    border-radius: var(--radius);
    color: var(--text-dark);
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.form-input:focus {
    border-color: var(--primary-color);
}

.form-input--textarea {
    height: 100px;
    resize: none;
}

.form-status {
    margin-top: 12px;
    font-size: 13px;
    font-weight: 500;
}
.form-status--success { color: #10b981; }
.form-status--error { color: #ef4444; }
.form-status--sending { color: var(--text-muted); }

/* Подвал сайта */
.footer {
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
}

.footer__container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
}

.footer__company {
    max-width: 600px;
}

.footer__copy {
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 6px;
}

.footer__address {
    font-size: 13px;
    color: var(--text-muted);
}

.footer__links {
    display: flex;
    gap: 20px;
}

.footer__link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.footer__link:hover {
    color: var(--text-dark);
    text-decoration: underline;
}

/* Мобильная адаптивность */
@media (max-width: 960px) {
    .hero__container, .about__grid, .steps-grid, .pricing__grid, .contact__container, .footer__container {
        flex-direction: column;
        align-items: stretch;
    }
    .hero { text-align: center; }
    .hero__actions { justify-content: center; }
    .nav { display: none; }
    .price-card { max-width: 100%; }
    .footer__links { flex-direction: column; gap: 10px; margin-top: 15px; }
}