/* OpenClaw landing: светлая тема по умолчанию + тёмная (data-theme на <html>) */

:root,
html[data-theme="light"] {
  color-scheme: light;
  --oc-bg: #fafafa;
  --oc-surface: #ffffff;
  --oc-surface-muted: #f4f4f5;
  --oc-border: #e4e4e7;
  --oc-text: #18181b;
  --oc-text-muted: #52525b;
  --oc-text-soft: #71717a;
  --oc-text-faint: #a1a1aa;
  --oc-nav-bg: rgba(255, 255, 255, 0.94);
  --oc-nav-shadow: 0 12px 40px -12px rgba(0, 0, 0, 0.15);
  --oc-hero-overlay: linear-gradient(180deg, #ffe4e6 0%, #fef2f2 28%, var(--oc-bg) 72%, var(--oc-bg) 100%);
  --oc-cta-box: linear-gradient(135deg, #fef2f2 0%, #e4e4e7 100%);
  --oc-card-tint: linear-gradient(135deg, #f4f4f5 0%, #e4e4e7 100%);
  --oc-footer: #f4f4f5;
  --oc-summary-chevron: #71717a;
  --oc-theme-color: #dc2626;
  /* Зона шапки (nav + safe-area): компенсация hero, с запасом против налезания */
  --oc-header-h: 6rem;
}

@media (min-width: 768px) {
  :root,
  html[data-theme="light"] {
    --oc-header-h: 6.25rem;
  }
}

html[data-theme="dark"] {
  color-scheme: dark;
  --oc-bg: #09090b;
  --oc-surface: #18181b;
  --oc-surface-muted: #27272a;
  --oc-border: #3f3f46;
  --oc-text: #fafafa;
  --oc-text-muted: #a1a1aa;
  --oc-text-soft: #71717a;
  --oc-text-faint: #52525b;
  --oc-nav-bg: rgba(9, 9, 11, 0.94);
  --oc-nav-shadow: 0 12px 40px -12px rgba(0, 0, 0, 0.55);
  --oc-hero-overlay: linear-gradient(180deg, #450a0a 0%, var(--oc-bg) 50%, var(--oc-bg) 100%);
  --oc-cta-box: linear-gradient(135deg, #450a0a 0%, #27272a 100%);
  --oc-card-tint: linear-gradient(135deg, #27272a 0%, #09090b 100%);
  --oc-footer: #09090b;
  --oc-summary-chevron: #71717a;
  --oc-theme-color: #09090b;
}

html {
  scroll-padding-top: calc(var(--oc-header-h, 6rem) + 0.5rem);
  background-color: var(--oc-bg);
}

body.oc-body {
  margin: 0;
  background-color: var(--oc-bg);
  color: var(--oc-text);
  padding: 0;
}

/* Шапка: safe-area только здесь, без полосы на body */
.oc-header-bar {
  padding-top: max(0.5rem, env(safe-area-inset-top, 0px));
}

/*
 * Первый экран: градиент уходит под шапку (margin-top: -header),
 * а padding-top = header + header + отступ, чтобы первый текст был
 * строго ниже плавающей навигации (иначе -header + малый padding
 * оставляет контент под шапкой).
 */
.oc-hero-section {
  position: relative;
  margin-top: calc(-1 * var(--oc-header-h));
  padding-top: calc(var(--oc-header-h) * 2 + 0.75rem);
  padding-bottom: 4rem;
  overflow-x: clip;
}

@media (min-width: 768px) {
  .oc-hero-section {
    padding-top: calc(var(--oc-header-h) * 2 + 1rem);
    padding-bottom: 4.5rem;
  }
}

.oc-hero-section .oc-hero-gradient {
  position: absolute;
  z-index: 0;
  left: 0;
  right: 0;
  top: calc(-1 * var(--oc-header-h) - env(safe-area-inset-top, 0px));
  bottom: 0;
  pointer-events: none;
}

.oc-hero-inner {
  position: relative;
  z-index: 1;
}

/* Остальные секции: верхний отступ не нужен (даёт hero) */
main > section:not(.oc-hero-section) {
  position: relative;
  z-index: 1;
}

/* SVG-иконки вместо эмодзи (Heroicons-style, stroke) */
.oc-icon {
  display: block;
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  color: #dc2626;
}

html[data-theme="dark"] .oc-icon {
  color: #f87171;
}

.oc-check {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  width: 1.125rem;
  height: 1.125rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
  color: #dc2626;
}

html[data-theme="dark"] .oc-check {
  color: #f87171;
}

.oc-check svg {
  width: 100%;
  height: 100%;
}

.oc-prose p {
  margin: 0 0 1rem;
  line-height: 1.65;
  font-size: 1rem;
}

.oc-prose p:last-child {
  margin-bottom: 0;
}

.oc-prose--lg p {
  font-size: 1.0625rem;
}

.oc-nav-shell {
  background: var(--oc-nav-bg);
  border: 1px solid color-mix(in srgb, var(--oc-border) 55%, transparent);
  box-shadow: var(--oc-nav-shadow);
}

/* Логотипы: b — тёмный на светлом фоне, w — светлый на тёмном */
.oc-logo-wrap {
  position: relative;
  display: inline-block;
  flex-shrink: 0;
  line-height: 0;
}

.oc-logo-wrap .oc-logo {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

html[data-theme="light"] .oc-logo--w {
  opacity: 0;
  pointer-events: none;
}

html[data-theme="light"] .oc-logo--b {
  opacity: 1;
}

html[data-theme="dark"] .oc-logo--b {
  opacity: 0;
  pointer-events: none;
}

html[data-theme="dark"] .oc-logo--w {
  opacity: 1;
}

.oc-hero-gradient {
  background: var(--oc-hero-overlay);
}

.oc-cta-gradient {
  background: var(--oc-cta-box);
}

.oc-card-tint {
  background: var(--oc-card-tint);
}

.oc-surface {
  background-color: var(--oc-surface);
}

.oc-surface-muted {
  background-color: var(--oc-surface-muted);
}

.oc-border {
  border-color: var(--oc-border);
}

.oc-text {
  color: var(--oc-text);
}

.oc-text-muted {
  color: var(--oc-text-muted);
}

.oc-text-soft {
  color: var(--oc-text-soft);
}

.oc-text-faint {
  color: var(--oc-text-faint);
}

.oc-strong {
  color: var(--oc-text);
  font-weight: 600;
}

html[data-theme="dark"] .oc-strong {
  color: #e4e4e7;
}

.oc-nav-link {
  color: var(--oc-text-soft);
  transition: color 0.2s ease;
}

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

.oc-footer {
  background-color: var(--oc-footer);
}

.oc-footer-link {
  color: var(--oc-text-soft);
  transition: color 0.2s ease;
}

.oc-footer-link:hover {
  color: var(--oc-text);
}

.oc-sidebar {
  background-color: var(--oc-bg);
  border-color: var(--oc-border);
}

.oc-sidebar-link {
  color: var(--oc-text-muted);
}

.oc-sidebar-link:hover {
  background-color: var(--oc-surface-muted);
}

.oc-btn-ghost {
  color: var(--oc-text-soft);
}

.oc-btn-ghost:hover {
  background-color: var(--oc-surface-muted);
  color: var(--oc-text);
}

.oc-btn-outline {
  border-color: var(--oc-border);
  color: var(--oc-text);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.oc-btn-outline:hover {
  border-color: #dc2626;
}

.oc-hamburger span {
  background-color: var(--oc-text-muted);
}

.oc-theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  border: 1px solid var(--oc-border);
  background: var(--oc-surface-muted);
  color: var(--oc-text);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.oc-theme-toggle:hover {
  border-color: #dc2626;
  background: var(--oc-surface);
}

.oc-theme-toggle svg {
  width: 1.125rem;
  height: 1.125rem;
}

/* FAQ summary chevron */
.oc-faq-chevron {
  color: var(--oc-summary-chevron);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.oc-faq-chevron svg {
  width: 1.25rem;
  height: 1.25rem;
}

details[open] > summary .oc-faq-chevron {
  transform: rotate(180deg);
}

/* Мобильное меню: translate-x-full нет в продакшен-бандле Tailwind — делаем сами */
#mobile-sidebar {
  transform: translateX(100%);
  transition: transform 0.3s ease, visibility 0.3s ease;
  visibility: hidden;
  pointer-events: none;
}

#mobile-sidebar.oc-sidebar-open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
}

#mobile-sidebar-backdrop {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

#mobile-sidebar-backdrop.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

@media (min-width: 1024px) {
  #mobile-sidebar,
  #mobile-sidebar-backdrop {
    display: none !important;
  }
}
