/* Shared sticky shell (header + nav flyout). Requires theme tokens on :root / html (see sticker-home / sticker-generator). */

/* Sticky block: menu row + optional canvas dropdown (stays at top while scrolling). */
.shellStack {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--shell-bg);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  transition: box-shadow 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
  box-shadow: var(--sticky-shadow);
}

.shell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  row-gap: 10px;
  padding: 12px var(--page-pad);
  background: transparent;
  border-bottom: none;
}

.canvasDropdown {
  background: linear-gradient(
    180deg,
    color-mix(in oklab, #fce7f3 72%, var(--panel-bg)) 0%,
    color-mix(in oklab, #fbcfe8 55%, var(--panel-bg)) 100%
  );
  border-top: 1px solid color-mix(in oklab, #f472b6 28%, var(--line));
  max-height: min(72vh, 640px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  transition: opacity 0.3s var(--ease-out);
}
.canvasDropdown[hidden] {
  display: none !important;
}
html[data-theme="dark"] .canvasDropdown {
  background: linear-gradient(
    180deg,
    color-mix(in oklab, #831843 38%, var(--panel-bg)) 0%,
    color-mix(in oklab, #9d174d 32%, var(--panel-bg)) 100%
  );
  border-top-color: color-mix(in oklab, #ec4899 22%, var(--line));
}
.canvasDropdownInner {
  padding: 12px var(--page-pad) 16px;
  max-width: min(1540px, 100%);
  margin: 0 auto;
}

/* Live canvas: Picture-in-picture (app.js) — OS PiP when supported, else draggable floater. */
.tinkerLiveHeader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 6px;
}
.chnch-live-pip-btn.shellIconBtn {
  flex-shrink: 0;
}
.chnchPipDock {
  position: fixed;
  z-index: 10050;
  width: min(42vw, 360px);
  max-width: calc(100vw - 24px);
  border-radius: var(--radius-lg, 14px);
  border: 1px solid var(--line);
  background: var(--shell-bg, var(--surface));
  box-shadow: 0 16px 48px rgba(28, 25, 23, 0.18);
  overflow: visible;
  touch-action: none;
  cursor: grab;
  min-width: 120px;
  min-height: 80px;
  user-select: none;
}
.chnchPipDock:active {
  cursor: grabbing;
}
html[data-theme="dark"] .chnchPipDock {
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.45);
}
.chnchPipDock__inner {
  position: relative;
  border-radius: inherit;
  overflow: hidden;
  background: var(--surface2, #f4f4f5);
}
.chnchPipDock__chrome {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 6px 2px;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--shell-bg, #fff) 88%, transparent) 0%,
    transparent 100%
  );
}
.chnchPipDock__x {
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 10px;
  font-size: 22px;
  line-height: 1;
  font-weight: 500;
  color: var(--text);
  background: color-mix(in oklab, var(--panel-bg) 75%, transparent);
  cursor: pointer;
  box-shadow: 0 1px 0 color-mix(in oklab, var(--line) 80%, transparent);
}
.chnchPipDock__x:hover {
  background: color-mix(in oklab, var(--vault) 14%, transparent);
  color: var(--vault);
}
.chnchPipDock__star {
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--vault);
  filter: drop-shadow(0 1px 2px color-mix(in oklab, var(--text) 12%, transparent));
}
.chnchPipDock__starSvg {
  width: 20px;
  height: 20px;
  display: block;
  transform-origin: 50% 50%;
}
.chnchPipDock--busy .chnchPipDock__starSvg {
  animation: chnchPipStarSpin 0.75s linear infinite;
}
@keyframes chnchPipStarSpin {
  to {
    transform: rotate(360deg);
  }
}
.chnchPipDock__body {
  padding: 36px 6px 8px;
  background: var(--surface2, #f4f4f5);
}
.chnchPipDock__body canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius, 10px);
  vertical-align: middle;
}

/* Toolbar: icon-only hits, glow on click (.iconHit + .iconGlowFlash from JS). */
.shellIconBtn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 44px;
  height: 44px;
  padding: 0;
  margin: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}
a.shellIconBtn {
  display: inline-flex;
}
.shellIconBtn:hover {
  color: var(--vault);
  background: color-mix(in oklab, var(--vault) 8%, transparent);
}
.shellIconBtn:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--vault) 55%, transparent);
  outline-offset: 2px;
}
.shellIconBtn:active {
  background: color-mix(in oklab, var(--vault) 14%, transparent);
}
.shellIconBtn.iconGlowFlash {
  animation: iconHitGlow 0.5s var(--ease-out) forwards;
}
@keyframes iconHitGlow {
  0% {
    box-shadow: none;
    filter: brightness(1);
  }
  45% {
    box-shadow:
      0 0 16px var(--vault-glow),
      0 0 32px var(--sea-dim),
      0 0 48px color-mix(in oklab, var(--vault) 25%, transparent);
    filter: brightness(1.08);
  }
  100% {
    box-shadow: none;
    filter: brightness(1);
  }
}
.ico--toolbar {
  width: 22px;
  height: 22px;
}
.ico--toolbar-chev {
  width: 12px;
  height: 12px;
  opacity: 0.65;
}

.canvasNavBtn {
  position: relative;
  width: auto;
  min-width: 44px;
  padding: 0 6px;
  gap: 2px;
  border-radius: 999px;
}
.canvasStartBadge {
  position: absolute;
  top: -9px;
  right: -6px;
  z-index: 2;
  font-family: "IBM Plex Mono", monospace;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--vault) 0%, var(--sea) 100%);
  color: #fff;
  line-height: 1;
  pointer-events: none;
  box-shadow:
    0 0 14px var(--vault-glow),
    0 0 28px var(--sea-dim),
    0 2px 8px rgba(28, 25, 23, 0.12);
  animation: startBadgeGlow 2.4s ease-in-out infinite;
}
html[data-theme="dark"] .canvasStartBadge {
  box-shadow:
    0 0 16px var(--vault-glow),
    0 0 32px var(--sea-dim),
    0 2px 10px rgba(0, 0, 0, 0.35);
}
.canvasNavBtn[aria-expanded="true"] .canvasStartBadge {
  display: none;
}
@keyframes startBadgeGlow {
  0%, 100% {
    filter: brightness(1);
    box-shadow:
      0 0 12px var(--vault-glow),
      0 0 22px var(--sea-dim),
      0 2px 8px rgba(28, 25, 23, 0.1);
  }
  50% {
    filter: brightness(1.08);
    box-shadow:
      0 0 22px var(--vault-glow),
      0 0 36px var(--sea-dim),
      0 2px 12px rgba(28, 25, 23, 0.08);
  }
}

/* When canvas is open: tighter header so more viewport goes to preview + page. */
.shellStack--canvasOpen .shell {
  padding: 6px var(--page-pad);
  row-gap: 6px;
}
.shellStack--canvasOpen .logo {
  font-size: 0.92rem;
  gap: 8px;
}
.shellStack--canvasOpen .logoMark {
  width: 28px;
  height: 28px;
  font-size: 11px;
}
.shellStack--canvasOpen .shellNav {
  gap: 2px;
}
.shellStack--canvasOpen .shellIconBtn {
  width: 38px;
  height: 38px;
}
.shellStack--canvasOpen .canvasNavBtn {
  min-width: 38px;
  padding: 0 4px;
}
.shellStack--canvasOpen .ico--toolbar {
  width: 20px;
  height: 20px;
}
.shellStack--canvasOpen .ico--toolbar-chev {
  width: 10px;
  height: 10px;
}
.shellStack--canvasOpen .navFlyoutSheet--icons .shellIconBtn {
  width: 38px;
  height: 38px;
}
.shellStack--canvasOpen .navFlyoutSheet--icons .themeToggle svg {
  width: 18px;
  height: 18px;
}
.shellStack--canvasOpen .headerAlert {
  padding: 6px 10px;
  font-size: 10px;
}
.shellStack--canvasOpen .headerAlertBar {
  height: 6px;
  width: 96px;
}

.canvasNavBtn .chev {
  transition: transform 0.2s var(--ease);
  flex-shrink: 0;
}
.canvasNavBtn[aria-expanded="true"] .chev {
  transform: rotate(180deg);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.logoBtn {
  appearance: none;
  background: transparent;
  border: none;
  padding: 0;
  box-shadow: none;
  cursor: pointer;
}
.logoBtn:hover {
  transform: none;
  background: transparent;
  box-shadow: none;
  border: none;
}
.logoBtn:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--vault) 55%, transparent);
  outline-offset: 3px;
  border-radius: 14px;
}
.logoMark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--vault) 0%, var(--sea) 100%);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: -0.04em;
  box-shadow: 0 4px 22px var(--vault-glow), 0 0 0 1px rgba(255, 255, 255, 0.12) inset;
}
.logoMark--preview {
  background: color-mix(in oklab, var(--surface) 55%, transparent);
  box-shadow: 0 6px 22px rgba(28, 25, 23, 0.1), 0 0 0 1px rgba(255, 255, 255, 0.22) inset;
  overflow: hidden;
}
html[data-theme="dark"] .logoMark--preview {
  background: color-mix(in oklab, var(--surface2) 60%, transparent);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
}
#logoPreviewC {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 999px;
}
.logo span.tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-left: 4px;
}

.shellNav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
  min-width: 0;
  flex-shrink: 0;
}

.menuIconBtn .menuSvg {
  width: 22px;
  height: 22px;
  display: block;
}
.menuIconBtn .menuSvg--close {
  display: none;
}
.menuIconBtn[aria-expanded="true"] .menuSvg--open {
  display: none;
}
.menuIconBtn[aria-expanded="true"] .menuSvg--close {
  display: block;
}

/* Shell header + site-menu flyout: one stroke weight (Polaroid menu template). */
.shellNav .menuSvg,
.shellNav .ico--toolbar-chev,
.shellNav .ico--toolbar {
  stroke-width: 1;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.navFlyout {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 8px var(--page-pad) 14px;
  pointer-events: none;
}
.navFlyout[hidden] {
  display: none !important;
}
.navFlyoutSheet {
  pointer-events: auto;
  max-width: min(320px, 100%);
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--shell-bg);
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  box-shadow: var(--shadow);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
/* Site menu: span the sticky shell (viewport) with the same horizontal inset as .navFlyout padding uses var(--page-pad). */
.navFlyoutSheet.navFlyoutSheet--icons {
  max-width: none;
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  box-sizing: border-box;
}
.navFlyoutSheet--icons {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 10px 8px;
  justify-items: center;
  align-items: center;
  padding: 10px 12px;
  max-width: none;
  width: 100%;
}
@media (max-width: 520px) {
  .navFlyoutSheet--icons {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px 6px;
    padding: 8px 10px;
  }
}
.navFlyoutSheet--icons .shellIconBtn.proJump {
  color: var(--sea);
  border: none;
  background: transparent;
  box-shadow: none;
}
.navFlyoutSheet--icons .shellIconBtn.proJump:hover {
  color: var(--vault);
  background: color-mix(in oklab, var(--vault) 10%, transparent);
  box-shadow: none;
  transform: none;
  filter: none;
}
.navFlyoutSheet--icons .shellIconBtn.donateIconHit {
  color: var(--accent);
}
.navFlyoutSheet--icons .shellIconBtn.donateIconHit:hover {
  color: color-mix(in oklab, var(--accent) 85%, #000);
}
/* Filled heart: flyout rule above uses hairline stroke-width for outline icons — this shape is fill-only. */
.navFlyoutSheet--icons .shellIconBtn.donateIconHit .ico--toolbarHeart,
.navFlyoutSheet--icons .shellIconBtn.donateIconHit .ico--toolbarHeart path {
  stroke: none;
  stroke-width: 0;
}
.navFlyoutSheet--icons .shellIconBtn.donateIconHit .ico--toolbarHeart path {
  fill: var(--accent);
}
.navFlyoutSheet--icons .shellIconBtn.donateIconHit:hover .ico--toolbarHeart path {
  fill: color-mix(in oklab, var(--accent) 85%, #000);
}
/* Cookie: outline icon needs readable stroke in the flyout (hairline rule below). */
.navFlyoutSheet--icons svg.ico--toolbarCookie {
  stroke-width: 1;
}
.navFlyoutSheet--icons .themeToggle {
  border: none;
  background: transparent;
  border-radius: 12px;
  width: 44px;
  height: 44px;
  padding: 0;
  margin: 0;
  box-shadow: none;
}
.navFlyoutSheet--icons .themeToggle:hover {
  box-shadow: none;
  background: color-mix(in oklab, var(--vault) 10%, transparent);
  transform: none;
}
.navFlyoutSheet--icons .themeToggle svg {
  width: 22px;
  height: 22px;
}

/* Flyout toolbar: match header menu weight (inline SVGs often ship stroke-width="2"). */
.navFlyoutSheet--icons svg {
  stroke-width: 1;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.headerAlert {
  flex: 1 1 100%;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--vault) 28%, var(--line));
  background: color-mix(in oklab, var(--surface) 88%, transparent);
  color: var(--text);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  line-height: 1.35;
  min-width: 0;
  box-shadow: var(--glow-status);
  transition: box-shadow 0.4s var(--ease-out), border-color 0.3s var(--ease-out);
}
.headerAlert.on {
  display: flex;
}
.headerAlertText {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
.headerAlertBar {
  position: relative;
  height: 8px;
  width: 120px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--surface2) 70%, transparent);
  border: 1px solid var(--line);
  overflow: hidden;
  flex: 0 0 auto;
  box-shadow: 0 0 12px var(--vault-dim), 0 0 20px var(--sea-dim);
}
.headerAlertBar::before {
  content: "";
  position: absolute;
  inset: 0;
  width: 55%;
  background: linear-gradient(90deg, transparent, var(--vault), var(--sea), transparent);
  opacity: 0.95;
  filter: blur(0.5px);
  box-shadow: 0 0 14px var(--vault-glow);
  transform: translateX(-80%);
  animation: alertFlow 1.15s linear infinite;
}

@keyframes alertFlow {
  0% { transform: translateX(-80%); }
  100% { transform: translateX(180%); }
}

.themeToggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--theme-toggle-bg);
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.25s var(--ease-out), border-color 0.25s var(--ease-out), transform 0.22s var(--ease-out), box-shadow 0.3s var(--ease-out);
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.45) inset, 0 4px 14px rgba(28, 25, 23, 0.05);
}
html[data-theme="dark"] .themeToggle {
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 4px 16px rgba(0, 0, 0, 0.3);
}

.themeToggle:hover {
  background: var(--theme-toggle-hover);
  border-color: var(--nav-link-hover-line);
}
.themeToggle:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--vault) 65%, transparent);
  outline-offset: 3px;
}
.themeToggle svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.themeToggle .themeIcon--moon {
  display: none;
}
html[data-theme="light"] .themeToggle .themeIcon--sun {
  display: none;
}
html[data-theme="light"] .themeToggle .themeIcon--moon {
  display: block;
}