/* Cross-document transitions: chrome stays put, media morphs, the page itself crossfades. */
@view-transition {
  navigation: auto;
}

.floating-dock { view-transition-name: app-dock; }
.mobile-app-header { view-transition-name: app-header; }

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 200ms;
}

::view-transition-group(media-hero) {
  animation-duration: 360ms;
  animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

::view-transition-old(media-hero),
::view-transition-new(media-hero) {
  height: 100%;
  object-fit: cover;
}

@media (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: none;
  }
}

:root {
  --app-nav-width: 72px;
  --app-nav-safe-top: max(12px, env(safe-area-inset-top));
  --app-nav-surface: rgba(248, 247, 243, 0.88);
  --app-nav-surface-strong: rgba(250, 249, 246, 0.97);
  --app-nav-line: rgba(28, 28, 24, 0.08);
  --app-nav-ink: rgba(29, 29, 25, 0.5);
  --app-nav-ink-strong: #23231f;
  --app-nav-active: rgba(31, 31, 27, 0.085);
  --app-nav-shadow: 0 18px 55px rgba(24, 23, 19, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  --app-nav-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="dark"] {
  --app-nav-surface: rgba(24, 24, 22, 0.86);
  --app-nav-surface-strong: rgba(27, 27, 24, 0.97);
  --app-nav-line: rgba(255, 255, 255, 0.09);
  --app-nav-ink: rgba(255, 255, 255, 0.5);
  --app-nav-ink-strong: rgba(255, 255, 255, 0.94);
  --app-nav-active: rgba(255, 255, 255, 0.105);
  --app-nav-shadow: 0 18px 60px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.055);
}

[data-nav-context="flow"] {
  --app-nav-surface: rgba(18, 18, 17, 0.64);
  --app-nav-surface-strong: rgba(22, 22, 20, 0.94);
  --app-nav-line: rgba(255, 255, 255, 0.12);
  --app-nav-ink: rgba(255, 255, 255, 0.56);
  --app-nav-ink-strong: #fff;
  --app-nav-active: rgba(255, 255, 255, 0.14);
}

[data-nav-context="radio"][data-theme="light"] {
  --app-nav-surface: rgba(238, 237, 230, 0.78);
  --app-nav-surface-strong: rgba(241, 240, 233, 0.96);
  --app-nav-ink: rgba(42, 56, 51, 0.48);
  --app-nav-ink-strong: #36594f;
  --app-nav-active: rgba(70, 107, 97, 0.12);
}

[data-nav-context="radio"][data-theme="dark"] {
  --app-nav-surface: rgba(21, 24, 21, 0.8);
  --app-nav-surface-strong: rgba(23, 27, 23, 0.96);
  --app-nav-ink-strong: #b8ccbf;
  --app-nav-active: rgba(159, 185, 173, 0.13);
}

body {
  padding-bottom: 0 !important;
}

/* Language switcher: compact RU/EN toggle matching dock-item metrics. */
.language-switcher .language-code {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1;
  user-select: none;
}

body[data-nav-context="favorite"] {
  padding-bottom: 0 !important;
}

body[data-nav-context="settings"],
body[data-nav-context="download"] {
  padding-bottom: 0 !important;
}

body.app-nav-menu-open {
  overflow: hidden;
}

.floating-dock form,
.app-nav-menu-list form {
  display: contents;
}

/* Shared heading rhythm for utility surfaces. */
.tool-page {
  min-height: calc(100dvh - 66px - env(safe-area-inset-top)) !important;
  padding-top: 24px !important;
}

.tool-page-header {
  position: relative;
  padding: 0 3px 25px !important;
}

.tool-page-overline {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 8px;
  color: var(--settings-muted, var(--download-muted, var(--app-nav-ink)));
  font-size: 9px;
  font-weight: 720;
  letter-spacing: 0.14em;
  line-height: 1;
  text-transform: uppercase;
}

.tool-page-overline svg {
  width: 13px;
  height: 13px;
  stroke-width: 1.8;
}

.tool-page-header .settings-title,
.tool-page-header .download-title {
  margin: 0;
  font-size: clamp(29px, 6vw, 34px);
  font-weight: 680;
  letter-spacing: -0.045em;
  line-height: 1.06;
}

.tool-page-intro {
  max-width: 440px !important;
  margin: 8px 0 0 !important;
  color: var(--settings-muted, var(--download-muted, var(--app-nav-ink)));
  font-size: 12px !important;
  line-height: 1.55 !important;
}

.mobile-app-header {
  position: fixed;
  top: var(--app-nav-safe-top);
  left: 12px;
  right: 12px;
  z-index: 242;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: opacity 180ms ease, transform 260ms var(--app-nav-ease);
}

.mobile-app-header.is-utility-page {
  justify-content: space-between;
}

.app-wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--app-nav-ink-strong);
  font-family: ui-serif, "Iowan Old Style", "Palatino Linotype", serif;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.035em;
  pointer-events: auto;
  text-decoration: none;
}

.app-wordmark-mark .brand-mark {
  width: 18px;
  height: 18px;
}

.app-wordmark-tik {
  font-weight: 400;
}

.app-wordmark-mark {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border: 1px solid var(--app-nav-line);
  border-radius: 9px;
  background: var(--app-nav-surface);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(18px) saturate(120%);
  -webkit-backdrop-filter: blur(18px) saturate(120%);
}

.mobile-mode-switch {
  height: 38px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 3px;
  border: 1px solid var(--app-nav-line);
  border-radius: 999px;
  background: var(--app-nav-surface);
  box-shadow: var(--app-nav-shadow);
  backdrop-filter: blur(24px) saturate(125%);
  -webkit-backdrop-filter: blur(24px) saturate(125%);
  pointer-events: auto;
}

.mobile-mode-link {
  min-width: 64px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--app-nav-ink);
  font-size: 11px;
  font-weight: 720;
  letter-spacing: 0.015em;
  text-decoration: none;
  transition: color 150ms ease, background-color 180ms ease, transform 150ms ease;
}

.mobile-mode-link.is-active {
  color: var(--app-nav-ink-strong);
  background: var(--app-nav-active);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.mobile-mode-link:active {
  transform: scale(0.95);
}

.mobile-nav-trigger {
  position: absolute;
  right: 0;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--app-nav-line);
  border-radius: 14px;
  color: var(--app-nav-ink-strong);
  background: var(--app-nav-surface);
  box-shadow: 0 8px 28px rgba(20, 20, 18, 0.11), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(22px) saturate(120%);
  -webkit-backdrop-filter: blur(22px) saturate(120%);
  cursor: pointer;
  pointer-events: auto;
  transition: transform 180ms var(--app-nav-ease), background-color 160ms ease;
}

.mobile-app-header.is-utility-page .mobile-nav-trigger {
  position: relative;
}

.mobile-nav-trigger svg {
  width: 18px;
  height: 18px;
  stroke-width: 1.8;
}

.mobile-nav-trigger:active {
  transform: scale(0.93);
}

.floating-dock {
  display: none;
}

.app-nav-menu {
  position: fixed;
  inset: 0;
  z-index: 260;
  display: flex;
  align-items: flex-end;
  padding: 10px 10px max(10px, env(safe-area-inset-bottom));
  background: rgba(10, 10, 9, 0);
  pointer-events: none;
  transition: background-color 220ms ease;
}

.app-nav-menu.is-open {
  background: rgba(10, 10, 9, 0.36);
  pointer-events: auto;
}

.app-nav-menu-card {
  width: min(100%, 480px);
  margin: 0 auto;
  padding: 8px 8px 10px;
  border: 1px solid var(--app-nav-line);
  border-radius: 25px;
  color: var(--app-nav-ink-strong);
  background: var(--app-nav-surface-strong);
  box-shadow: 0 28px 85px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(30px) saturate(118%);
  -webkit-backdrop-filter: blur(30px) saturate(118%);
  opacity: 0;
  transform: translateY(24px) scale(0.98);
  transform-origin: bottom center;
  transition: opacity 170ms ease, transform 280ms var(--app-nav-ease);
}

.app-nav-menu.is-open .app-nav-menu-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.app-nav-menu-handle {
  width: 34px;
  height: 4px;
  margin: 2px auto 10px;
  border-radius: 999px;
  background: var(--app-nav-line);
}

.app-nav-menu-label {
  padding: 8px 12px 5px;
  color: var(--app-nav-ink);
  font-size: 9px;
  font-weight: 760;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.app-nav-menu-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.app-nav-menu-item {
  min-height: 48px;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 0 12px;
  border-radius: 14px;
  color: var(--app-nav-ink);
  text-decoration: none;
  transition: color 140ms ease, background-color 140ms ease, transform 140ms ease;
}

.app-nav-menu-item svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  stroke-width: 1.8;
}

.app-nav-menu-item span {
  font-size: 13px;
  font-weight: 640;
}

.app-nav-menu-item.is-active,
.app-nav-menu-item:hover,
.app-nav-menu-item:focus-visible {
  color: var(--app-nav-ink-strong);
  background: var(--app-nav-active);
  outline: none;
}

.app-nav-menu-item:active {
  transform: scale(0.97);
}

.app-nav-menu-divider {
  height: 1px;
  margin: 6px 12px 2px;
  background: var(--app-nav-line);
}

body:not([data-nav-context="flow"]):not([data-nav-context="radio"]) {
  padding-top: calc(66px + env(safe-area-inset-top)) !important;
}

body[data-nav-context="flow"] #custom-controls {
  bottom: calc(22px + env(safe-area-inset-bottom));
}

body[data-nav-context="flow"] .controls-sidebar {
  bottom: calc(76px + env(safe-area-inset-bottom));
}

body[data-nav-context="flow"].immersive-mode .mobile-app-header {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-16px);
}

body[data-nav-context="radio"] .radio-page {
  padding-top: max(4.9rem, calc(env(safe-area-inset-top) + 4.1rem));
  padding-bottom: max(1rem, calc(env(safe-area-inset-bottom) + 0.6rem));
}

@media (min-width: 640px) {
  .tool-page {
    padding-top: 32px !important;
  }
}

@media (min-width: 768px) and (min-height: 600px) {
  body {
    padding-top: 0 !important;
    padding-left: var(--app-nav-width) !important;
  }

  body[data-nav-context="favorite"] {
    padding-top: 0 !important;
  }

  body:not([data-nav-context="flow"]):not([data-nav-context="radio"]) {
    padding-top: 0 !important;
  }

  .tool-page {
    min-height: 100dvh !important;
    padding-top: 34px !important;
  }

  .mobile-app-header,
  .app-nav-menu {
    display: none;
  }

  .floating-dock {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--app-nav-width);
    height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: max(14px, env(safe-area-inset-top)) 9px max(14px, env(safe-area-inset-bottom));
    border: 0;
    border-right: 1px solid var(--app-nav-line);
    border-radius: 0;
    color: var(--app-nav-ink);
    background: var(--app-nav-surface);
    box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.025);
    backdrop-filter: blur(28px) saturate(115%);
    -webkit-backdrop-filter: blur(28px) saturate(115%);
    transform: translateX(0);
    z-index: 250;
    transition: transform 300ms var(--app-nav-ease), opacity 180ms ease;
  }

  .rail-brand {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    margin-bottom: 16px;
    border: 1px solid var(--app-nav-line);
    border-radius: 14px;
    color: var(--app-nav-ink-strong);
    background: var(--app-nav-active);
    text-decoration: none;
  }

  .rail-brand .brand-mark {
    width: 26px;
    height: 26px;
  }

  .rail-spacer {
    flex: 1;
  }

  .rail-divider {
    width: 24px;
    height: 1px;
    margin: 9px 0;
    background: var(--app-nav-line);
  }

  .rail-divider-compact {
    margin: 5px 0;
  }

  .dock-item {
    position: relative;
    width: 46px;
    height: 46px;
    flex: 0 0 46px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 14px;
    color: var(--app-nav-ink);
    background: transparent;
    cursor: pointer;
    text-decoration: none;
    transition: color 150ms ease, background-color 180ms ease, transform 160ms var(--app-nav-ease);
  }

  .dock-item::before {
    content: none;
  }

  .dock-item::after {
    content: none;
  }

  .dock-item.active {
    color: var(--app-nav-ink-strong);
    background: var(--app-nav-active);
  }

  .dock-item.active::after {
    content: "";
    position: absolute;
    top: 50%;
    right: auto;
    bottom: auto;
    left: -9px;
    width: 3px;
    height: 17px;
    padding: 0;
    border: 0;
    border-radius: 0 99px 99px 0;
    background: currentColor;
    box-shadow: none;
    opacity: 1;
    transform: translateY(-50%);
    transition: none;
  }

  .dock-item:hover,
  .dock-item:focus-visible {
    color: var(--app-nav-ink-strong);
    background: var(--app-nav-active);
    outline: none;
  }

  .dock-item:active {
    transform: scale(0.92);
  }

  .dock-item .nav-icon,
  .dock-item > svg {
    width: 20px;
    height: 20px;
    overflow: visible;
    z-index: 1;
  }

  .dock-item::selection {
    background: transparent;
  }

  .dock-item .nav-icon-filled {
    opacity: 0;
  }

  .dock-item.active .nav-icon-outline {
    opacity: 1;
    transform: none;
  }

  .dock-item.active .nav-icon-filled {
    opacity: 0;
  }

  .dock-item[data-label] .rail-tooltip {
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    padding: 7px 9px;
    border: 1px solid var(--app-nav-line);
    border-radius: 9px;
    color: var(--app-nav-ink-strong);
    background: var(--app-nav-surface-strong);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.14);
    font-size: 11px;
    font-weight: 650;
    line-height: 1;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transform: translate(-4px, -50%);
    transition: opacity 120ms ease, transform 180ms var(--app-nav-ease);
  }

  .dock-item:hover .rail-tooltip,
  .dock-item:focus-visible .rail-tooltip {
    opacity: 1;
    transform: translate(0, -50%);
  }

  body[data-nav-context="flow"] #container {
    left: var(--app-nav-width);
    width: auto;
  }

  body[data-nav-context="flow"].immersive-mode {
    padding-left: 0 !important;
  }

  body[data-nav-context="flow"].immersive-mode #container {
    left: 0;
  }

  body[data-nav-context="flow"].immersive-mode .floating-dock {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-100%) !important;
  }

  body[data-nav-context="radio"] .radio-page {
    padding-top: clamp(0.75rem, 2dvh, 1.15rem);
    padding-bottom: clamp(0.75rem, 2dvh, 1.15rem);
  }

  .saved-page {
    min-height: 100dvh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-app-header,
  .mobile-mode-link,
  .mobile-nav-trigger,
  .app-nav-menu,
  .app-nav-menu-card,
  .app-nav-menu-item,
  .floating-dock,
  .dock-item {
    transition-duration: 0.01ms !important;
  }
}