/* Рецепт.ИИ — landing styles
   Минималистичный mobile-first дизайн без внешних зависимостей
   (без CDN-шрифтов — Cloudflare-блокировки в РФ) */

:root {
  --color-primary: #2d5e3e;
  --color-primary-hover: #1f4429;
  --color-accent: #e67e22;
  --color-text: #2c3e50;
  --color-text-light: #5d6d7e;
  --color-bg: #ffffff;
  --color-bg-soft: #f8f9fa;
  --color-border: #e1e5eb;
  --max-width: 960px;
  --radius: 12px;
  --shadow-soft: 0 2px 12px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Шапка */

header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 100;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.logo span {
  color: var(--color-accent);
}

/* Hero */

.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero .lead {
  font-size: clamp(1.125rem, 3vw, 1.4rem);
  color: var(--color-text-light);
  margin-bottom: 2rem;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.hero p.subtitle {
  font-size: 1.05rem;
  color: var(--color-text-light);
  margin-bottom: 2.5rem;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

/* Кнопки */

.btn {
  display: inline-block;
  padding: 0.95rem 2.25rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
  font-family: inherit;
}

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

.btn:active {
  transform: translateY(1px);
}

.btn.secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: calc(0.95rem - 2px) calc(2.25rem - 2px);
}

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

/* Секции */

section {
  padding: 4rem 0;
}

section.bg-soft {
  background: var(--color-bg-soft);
}

section h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-text);
}

/* Фичи (3 колонки → 1 на мобайл) */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.feature {
  background: var(--color-bg);
  padding: 2rem 1.75rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
}

.feature .icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.feature h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.feature p {
  color: var(--color-text-light);
  font-size: 0.98rem;
}

/* Тарифы */

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.plan {
  background: var(--color-bg);
  padding: 2rem 1.75rem;
  border-radius: var(--radius);
  border: 2px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.plan.recommended {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
  position: relative;
}

.plan.recommended::before {
  content: "Рекомендуем";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  padding: 0.25rem 0.95rem;
  font-size: 0.8rem;
  border-radius: 999px;
  font-weight: 600;
}

.plan h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.plan .price {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.plan .price-period {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.plan ul {
  list-style: none;
  margin-top: auto;
}

.plan ul li {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 0.95rem;
}

.plan ul li:last-child {
  border-bottom: none;
}

.plan ul li::before {
  content: "✓ ";
  color: var(--color-primary);
  font-weight: 700;
  margin-right: 0.35rem;
}

/* Waitlist форма */

.waitlist {
  text-align: center;
}

.waitlist p {
  color: var(--color-text-light);
  margin-bottom: 2rem;
  font-size: 1.05rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.waitlist form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  max-width: 500px;
  margin: 0 auto;
}

.waitlist input[type="email"] {
  flex: 1 1 240px;
  padding: 0.95rem 1.25rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s ease;
}

.waitlist input[type="email"]:focus {
  outline: none;
  border-color: var(--color-primary);
}

.waitlist .consent {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 1rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.waitlist .consent a {
  color: var(--color-primary);
}

/* Документы */

.legal-section {
  text-align: center;
}

.legal-section .docs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  list-style: none;
}

.legal-section a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease;
}

.legal-section a:hover {
  border-bottom-color: var(--color-primary);
}

/* Footer с реквизитами */

footer {
  background: var(--color-bg-soft);
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--color-border);
}

footer h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

footer .footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

footer p {
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
  color: var(--color-text);
}

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

footer a:hover {
  text-decoration: underline;
}

footer .copyright {
  border-top: 1px solid var(--color-border);
  padding-top: 1.25rem;
  text-align: center;
  font-size: 0.88rem;
  color: var(--color-text-light);
}

/* Страницы документов (oferta.html, privacy.html) */

.document {
  max-width: 800px;
  margin: 3rem auto;
  padding: 0 1.25rem;
}

.document h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.document h2 {
  font-size: 1.4rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.document h3 {
  font-size: 1.15rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.document p {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.document ul, .document ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  color: var(--color-text);
}

.document li {
  margin-bottom: 0.5rem;
}

.document .meta {
  background: var(--color-bg-soft);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius);
  margin-bottom: 2rem;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.document .back-link {
  display: inline-block;
  margin-bottom: 2rem;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.document .back-link:hover {
  text-decoration: underline;
}

/* Адаптивность */

@media (max-width: 640px) {
  .hero {
    padding: 3rem 0 2.5rem;
  }

  section {
    padding: 3rem 0;
  }

  .feature, .plan {
    padding: 1.5rem 1.25rem;
  }

  footer {
    padding: 2.5rem 0 1.5rem;
  }
}