/* ========== Адаптив: безопасные зоны и база ========== */
html {
  -webkit-text-size-adjust: 100%;
}
body {
  overflow-x: hidden;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}
.app-root {
  padding-bottom: env(safe-area-inset-bottom);
}

/* ========== Topbar: планшет и мобильное меню (слева, поверх контента) ========== */
@media (max-width: 900px) {
  .topbar {
    height: auto;
    min-height: 56px;
    padding: var(--sp-2) var(--sp-3) var(--sp-2);
    padding-left: max(var(--sp-3), env(safe-area-inset-left));
    padding-right: max(var(--sp-3), env(safe-area-inset-right));
  }
  .topbar-inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    grid-template-areas: "burger brand .";
    align-items: center;
    padding: 0;
    width: 100%;
  }
  .burger {
    grid-area: burger;
    justify-self: start;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    border-radius: var(--r-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--text);
  }
  .brand {
    grid-area: brand;
    justify-self: center;
    font-size: 17px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    text-align: center;
  }
  .burger:hover {
    background: var(--surface2);
  }
  /* Меню: выезжает слева, поверх страницы */
  .top-nav {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: min(280px, 85vw);
    max-width: 100%;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: calc(56px + var(--sp-2)) var(--sp-2) var(--sp-2);
    padding-left: max(var(--sp-2), env(safe-area-inset-left));
    padding-top: max(calc(56px + var(--sp-2)), calc(56px + env(safe-area-inset-top)));
    background: var(--surface);
    border-right: 1px solid var(--border);
    box-shadow: none;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .top-nav.open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
  }
  .top-nav a {
    padding: 12px 14px;
    min-height: 44px;
    display: flex;
    align-items: center;
    font-size: 15px;
    border-radius: var(--r-sm);
  }
  /* Затемнение фона при открытом меню */
  body.nav-open::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.4);
    pointer-events: auto;
  }
}

/* ========== Контент и типографика на малых экранах ========== */
@media (max-width: 768px) {
  body {
    font-size: 16px;
  }
  .content {
    margin-top: var(--sp-3);
    margin-bottom: var(--sp-5);
    padding: var(--sp-4) var(--sp-3);
    padding-left: max(var(--sp-3), env(safe-area-inset-left));
    padding-right: max(var(--sp-3), env(safe-area-inset-right));
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
  .page-header,
  .section,
  .card,
  .protocol-content,
  .quickstart-content {
    padding: var(--sp-4);
  }
  .overview-page .panel {
    padding: var(--sp-4);
  }
  .overview-page .h1 {
    font-size: 22px;
  }
  .overview-page .lead {
    font-size: 15px;
  }
  .overview-page .card-title {
    font-size: 18px;
  }
  .content h1 { font-size: 22px; }
  .content h2 { font-size: 18px; }
  .content h3 { font-size: 16px; }
  .api-controls {
    grid-template-columns: 1fr;
  }
}

/* ========== API / Теория: двухколоночный layout ========== */
@media (max-width: 900px) {
  .docs-api-header {
    flex-wrap: wrap;
    padding: var(--sp-3) var(--sp-3);
    padding-left: max(var(--sp-3), env(safe-area-inset-left));
    padding-right: max(var(--sp-3), env(safe-area-inset-right));
    gap: var(--sp-2);
  }
  .docs-api-search {
    min-width: 0;
    max-width: none;
    width: 100%;
    flex: 1 1 100%;
  }
  .docs-api-header .docs-api-sections {
    flex-wrap: wrap;
  }
  .docs-api-header .docs-api-subsections {
    flex-wrap: wrap;
  }
  .docs-api-header .docs-api-levels {
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .docs-api-layout {
    flex-direction: column;
    min-height: 320px;
  }
  .docs-api-sidebar {
    width: 100%;
    max-width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    max-height: 220px;
    min-height: 120px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 0;
  }
  .docs-api-nav a,
  .docs-api-nav button {
    min-height: 44px;
    padding: 10px 12px;
    font-size: 14px;
  }
  .docs-api-main {
    padding: var(--sp-4);
    padding-left: max(var(--sp-4), env(safe-area-inset-left));
    padding-right: max(var(--sp-4), env(safe-area-inset-right));
    overflow-x: hidden;
  }
  .docs-api-detail-content,
  .api-detail-content pre,
  .docs-api-detail-content pre {
    font-size: 13px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-height: none;
  }
  .docs-api-detail-content pre,
  .api-detail-content pre {
    padding: var(--sp-3);
    margin-left: calc(-1 * max(var(--sp-4), env(safe-area-inset-left)));
    margin-right: calc(-1 * max(var(--sp-4), env(safe-area-inset-right)));
    padding-left: max(var(--sp-4), env(safe-area-inset-left));
    padding-right: var(--sp-4);
    border-radius: 0;
  }
  .table-wrap {
    margin-left: calc(-1 * max(var(--sp-4), env(safe-area-inset-left)));
    margin-right: calc(-1 * max(var(--sp-4), env(safe-area-inset-right)));
    padding-left: max(var(--sp-4), env(safe-area-inset-left));
    padding-right: var(--sp-4);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .api-page .docs-api-detail .table-wrap,
  .docs-api-detail-content .table-wrap {
    display: block;
  }
}

@media (max-width: 480px) {
  .docs-api-sidebar {
    max-height: 180px;
  }
  .docs-api-main {
    padding: var(--sp-3);
    padding-left: max(var(--sp-3), env(safe-area-inset-left));
    padding-right: max(var(--sp-3), env(safe-area-inset-right));
  }
  .docs-api-detail h2 {
    font-size: 16px;
  }
}

/* ========== Таблицы: горизонтальный скролл везде ========== */
.table-wrap {
  overflow-x: auto;
  overflow-y: hidden;
  width: 100%;
  min-width: 0;
  -webkit-overflow-scrolling: touch;
}
@media (max-width: 768px) {
  .docs-api-detail-content .table th,
  .docs-api-detail-content .table td,
  .api-detail-content .table th,
  .api-detail-content .table td {
    padding: 8px 10px;
    font-size: 12px;
  }
}

/* ========== Drawer (боковая панель) ========== */
.drawer {
  width: min(560px, 100vw - var(--sp-4));
  max-width: 100%;
  padding: var(--sp-5);
  padding-left: max(var(--sp-5), env(safe-area-inset-left));
  padding-top: max(var(--sp-5), env(safe-area-inset-top));
  padding-bottom: max(var(--sp-5), env(safe-area-inset-bottom));
}
@media (max-width: 480px) {
  .drawer {
    width: 100%;
    padding: var(--sp-4);
    padding-left: max(var(--sp-4), env(safe-area-inset-left));
  }
}

/* ========== Overview / карточки ========== */
@media (max-width: 980px) {
  .overview-page .grid {
    grid-template-columns: 1fr;
  }
  .overview-page .card {
    min-height: auto;
  }
}

@media (max-width: 600px) {
  .overview-page .panel {
    padding: var(--sp-3);
  }
  .overview-page .grid {
    gap: var(--sp-3);
    margin-top: var(--sp-3);
  }
  .overview-page .card {
    padding: var(--sp-3);
  }
  .overview-page .btn {
    min-height: 44px;
    padding: 0 16px;
  }
}

/* ========== Футер: выравнивание в адаптиве ========== */
@media (max-width: 900px) {
  .app-footer.shell,
  footer.shell.app-footer {
    padding-left: max(var(--sp-4), env(safe-area-inset-left));
    padding-right: max(var(--sp-4), env(safe-area-inset-right));
  }
  .app-footer {
    padding: var(--sp-4) 0;
    padding-bottom: max(var(--sp-4), env(safe-area-inset-bottom));
    gap: var(--sp-4);
    align-items: center;
  }
  .app-footer .branding-line {
    text-align: center;
    flex: 1;
    min-width: 0;
  }
  .app-footer-actions {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    flex-shrink: 0;
  }
}
@media (max-width: 640px) {
  .app-footer {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    padding: var(--sp-4);
    padding-left: max(var(--sp-4), env(safe-area-inset-left));
    padding-right: max(var(--sp-4), env(safe-area-inset-right));
    padding-bottom: max(var(--sp-5), env(safe-area-inset-bottom));
    gap: var(--sp-4);
  }
  .app-footer .branding-line {
    max-width: 100%;
    order: 1;
    line-height: 1.5;
  }
  .app-footer-actions {
    order: 2;
    width: 100%;
    justify-content: center;
    padding-top: var(--sp-2);
  }
}
@media (max-width: 360px) {
  .app-footer {
    padding-left: max(var(--sp-3), env(safe-area-inset-left));
    padding-right: max(var(--sp-3), env(safe-area-inset-right));
  }
}
.app-footer-actions .icon-btn.theme-toggle {
  min-width: 44px;
  min-height: 44px;
}

/* ========== Узкие экраны ========== */
@media (max-width: 360px) {
  .topbar {
    padding-left: max(var(--sp-2), env(safe-area-inset-left));
    padding-right: max(var(--sp-2), env(safe-area-inset-right));
  }
  .content {
    padding-left: max(var(--sp-2), env(safe-area-inset-left));
    padding-right: max(var(--sp-2), env(safe-area-inset-right));
  }
  .brand {
    font-size: 16px;
  }
}

/* ========== Скелетон: адаптив ========== */
@media (max-width: 768px) {
  .skeleton-docs-layout {
    flex-direction: column;
    min-height: 280px;
  }
  .skeleton-docs-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: var(--sp-3);
  }
  .skeleton-docs-main {
    padding: var(--sp-4);
  }
}
@media (max-width: 600px) {
  .content-skeleton .grid {
    grid-template-columns: 1fr !important;
  }
  .skeleton-card {
    padding: var(--sp-3);
  }
}

/* ========== Уменьшение анимации по предпочтению ========== */
@media (prefers-reduced-motion: reduce) {
  .top-nav,
  .drawer {
    transition: none;
  }
}