/**
 * Æ Visualizer Demo — menu chrome + settings sidebar
 * Token-driven surfaces (excluded from canvas invert filter).
 */

:root {
  --studio-menu-width: 17.5rem;
  --studio-sidebar-width: 17.5rem;
  --menu-surface: rgba(12, 12, 12, 0.72);
  --menu-border: rgba(255, 255, 255, 0.1);
  --menu-divider: rgba(255, 255, 255, 0.08);
  --menu-shadow: none;
  --menu-blur: blur(24px) saturate(1.2);
  --menu-label: rgba(255, 255, 255, 0.42);
  --menu-muted: rgba(255, 255, 255, 0.38);
  --menu-header-text: rgba(255, 255, 255, 0.88);
  --menu-control-bg: rgba(255, 255, 255, 0.06);
  --menu-control-border: rgba(255, 255, 255, 0.14);
  --menu-control-text: rgba(255, 255, 255, 0.72);
  --menu-control-hover-border: rgba(255, 255, 255, 0.55);
  --menu-control-hover-text: #ffffff;
  --menu-control-active-bg: #ffffff;
  --menu-control-active-text: #000000;
  --menu-range-track: rgba(255, 255, 255, 0.18);
  --menu-range-thumb: #ffffff;
  --menu-range-thumb-ring: rgba(12, 12, 12, 0.9);
  --menu-backdrop: rgba(0, 0, 0, 0.35);
}

body.inverted {
  --menu-surface: rgba(255, 255, 255, 0.78);
  --menu-border: rgba(0, 0, 0, 0.1);
  --menu-divider: rgba(0, 0, 0, 0.08);
  --menu-label: rgba(0, 0, 0, 0.4);
  --menu-muted: rgba(0, 0, 0, 0.38);
  --menu-header-text: rgba(0, 0, 0, 0.88);
  --menu-control-bg: rgba(0, 0, 0, 0.04);
  --menu-control-border: rgba(0, 0, 0, 0.12);
  --menu-control-text: rgba(0, 0, 0, 0.65);
  --menu-control-hover-border: #000000;
  --menu-control-hover-text: #000000;
  --menu-control-active-bg: #000000;
  --menu-control-active-text: #ffffff;
  --menu-range-track: rgba(0, 0, 0, 0.15);
  --menu-range-thumb: #000000;
  --menu-range-thumb-ring: rgba(255, 255, 255, 0.95);
  --menu-backdrop: rgba(0, 0, 0, 0.2);
}

/* --- Panel shell --- */

#panel,
.pro-subpanel {
  background: var(--menu-surface);
  backdrop-filter: var(--menu-blur);
  -webkit-backdrop-filter: var(--menu-blur);
  border: 1px solid var(--menu-border);
  border-radius: 0;
  padding: 0;
  z-index: 10;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--menu-shadow);
  filter: none;
}

.panel-settings-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 1rem 1rem 0.85rem;
  border-bottom: 1px solid var(--menu-divider);
  font-family: var(--font);
  line-height: 1.2;
}

.panel-settings-header__logo {
  display: block;
  width: 20px;
  height: 20px;
  object-fit: contain;
  flex-shrink: 0;
}

body:not(.inverted) .panel-settings-header__logo {
  filter: none;
}

body.inverted .panel-settings-header__logo {
  filter: invert(1) contrast(1.22);
}

.panel-settings-header__slash {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--menu-label);
}

.panel-settings-header__text {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--menu-header-text);
}

.panel-art-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: url('assets/overlay-mobile.png');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  opacity: 0.2;
  mix-blend-mode: screen;
}

body.inverted #panel .panel-art-overlay {
  filter: invert(1) contrast(1.12);
  mix-blend-mode: multiply;
  opacity: 0.2;
}

#panel .panel-settings-header,
#panel .panel-scroll {
  position: relative;
  z-index: 1;
}

.chrome-menu-anchor {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 35;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0;
  width: max-content;
  pointer-events: none;
}

.chrome-menu-anchor .chrome-actions {
  position: static;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  width: max-content;
  pointer-events: none;
}

.chrome-menu-anchor .chrome-actions > * {
  pointer-events: auto;
}

.toggle-panel-label--close {
  display: none;
}

body:not(.panel-hidden) .toggle-panel-label--open {
  display: none;
}

body:not(.panel-hidden) .toggle-panel-label--close {
  display: inline;
}

.menu-reveal {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 0.26s cubic-bezier(0.22, 1, 0.36, 1);
  align-self: stretch;
  width: 100%;
}

body.panel-hidden .menu-reveal {
  grid-template-rows: 0fr;
}

.menu-reveal > #panel {
  min-height: 0;
  overflow: hidden;
}

#panel {
  position: relative;
  width: var(--studio-menu-width);
  margin: 0;
  transform-origin: top right;
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition:
    opacity 0.2s ease 0.05s,
    transform 0.26s cubic-bezier(0.22, 1, 0.36, 1) 0.05s;
}

body.panel-hidden #panel {
  opacity: 0;
  transform: translate3d(0, -6px, 0);
  transition:
    opacity 0.14s ease,
    transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

#panel .panel-scroll {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 1rem;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--menu-divider) transparent;
}

#panel .panel-scroll::-webkit-scrollbar {
  width: 4px;
}

#panel .panel-scroll::-webkit-scrollbar-thumb {
  background: var(--menu-divider);
}

#panel .panel-block {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

#panel .panel-section-title {
  display: none;
}

/* --- Menu params --- */

#panel .menu-param {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin: 0;
  padding: 0 0 1rem;
  border-bottom: 1px solid var(--menu-divider);
}

#panel .panel-block-free .menu-param:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

#panel .menu-param--segment {
  grid-template-columns: 1fr;
  grid-template-rows: auto auto;
  gap: 0.5rem;
}

#panel .menu-param__label {
  grid-column: 1;
  grid-row: 1;
  font-size: 0.55rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--menu-label);
}

#panel .menu-param--segment .menu-param__label {
  grid-column: 1;
}

#panel .menu-param__val {
  grid-column: 2;
  grid-row: 1;
  font-size: 0.55rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--menu-muted);
  min-width: 2.25rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

#panel .menu-param__head {
  grid-column: 1 / -1;
  grid-row: 1;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
}

#panel .menu-param__head .menu-param__label,
#panel .menu-param__head .menu-param__val {
  grid-column: auto;
  grid-row: auto;
}

#panel .menu-param.param-speed input[type="range"] {
  grid-column: 1 / -1;
  grid-row: 2;
}

#panel .menu-segment {
  grid-column: 1 / -1;
  grid-row: 2;
  display: flex;
  gap: 0;
  width: 100%;
}

#panel .menu-param--segment .menu-segment {
  grid-row: 2;
}

/* --- Panel controls (unchanged aesthetic) --- */

#panel .btn {
  flex: 1;
  min-width: 0;
  min-height: 32px;
  padding: 0.5rem 0.4rem;
  border: 1px solid var(--menu-control-border);
  border-radius: 0;
  background: var(--menu-control-bg);
  color: var(--menu-control-text);
  font-family: var(--font);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  text-align: center;
  filter: none;
}

#panel .btn:hover,
#panel .btn:focus-visible {
  position: relative;
  z-index: 1;
  color: var(--menu-control-hover-text);
  border-color: var(--menu-control-hover-border);
}

#panel .btn.active,
#panel .grain-btn.active,
#panel .smudge-btn.active,
#panel .strengthen-btn.active,
#panel .quality-btn.active {
  position: relative;
  z-index: 1;
  background: var(--menu-control-active-bg);
  color: var(--menu-control-active-text);
  border-color: var(--menu-control-active-bg);
  filter: none;
}

#panel .menu-segment .btn + .btn {
  margin-left: -1px;
}

#panel input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  margin: 0.35rem 0 0;
  background: var(--menu-range-track);
  border-radius: 0;
  outline: none;
  filter: none;
}

#panel input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--menu-range-thumb);
  border: 2px solid var(--menu-range-thumb-ring);
  box-shadow: 0 0 0 1px var(--menu-range-track);
  cursor: pointer;
}

#panel .panel-block-mobile-actions {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--menu-divider);
}

#panel .panel-block-mobile-actions .btn {
  flex: none;
  width: 100%;
  padding: 0.5rem 0.75rem;
}

.menu-backdrop {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 19;
  background: var(--menu-backdrop);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}

body:not(.panel-hidden) .menu-backdrop {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* --- Chrome buttons --- */

.chrome-actions-bottom {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  width: max-content;
}

a.chrome-btn {
  text-decoration: none;
}

.chrome-btn {
  min-height: 32px;
  padding: 0.5rem 0.85rem;
  border: 1px solid #e5e5e5;
  border-radius: 0;
  background: #ffffff;
  color: #000000;
  font-family: var(--font);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.chrome-btn:hover {
  color: #000000;
  border-color: #000000;
}

#generate-quick.is-generating {
  pointer-events: none;
  cursor: wait;
}

body:not(.inverted) #generate-quick.is-generating {
  filter: none;
  background: #ffffff;
  color: #000000;
  border-color: #e5e5e5;
}

body.inverted #generate-quick.is-generating {
  filter: invert(1) contrast(1.22);
  background: #000000;
  color: #ffffff;
  border-color: #000000;
}

body.inverted:not(.panel-hidden) #toggle-panel {
  background: #000000;
  color: #ffffff;
  border-color: #000000;
  filter: none;
}

body.inverted:not(.panel-hidden) #toggle-panel:hover {
  background: #111111;
  color: #ffffff;
  border-color: #111111;
}

body:not(.inverted) .chrome-btn {
  filter: invert(1) contrast(1.22);
}

body:not(.inverted):not(.panel-hidden) #toggle-panel {
  background: #ffffff;
  color: #000000;
  border-color: #e5e5e5;
  filter: none;
}

body:not(.inverted):not(.panel-hidden) #toggle-panel:hover {
  color: #000000;
  border-color: #000000;
}

.btn-label-short {
  display: none;
}

.chrome-bottom-only {
  display: inline-flex;
}

.pro-subpanel .btn {
  background: var(--menu-control-bg);
  color: var(--menu-control-text);
  border-color: var(--menu-control-border);
  filter: none;
}

.pro-subpanel .btn.active,
.pro-subpanel .btn.btn-primary {
  background: var(--menu-control-active-bg);
  color: var(--menu-control-active-text);
  border-color: var(--menu-control-active-bg);
  filter: none;
}

.pro-subpanel input[type="range"] {
  background: var(--menu-range-track);
  filter: none;
}

.pro-subpanel input[type="range"]::-webkit-slider-thumb {
  background: var(--menu-range-thumb);
  border-color: var(--menu-range-thumb-ring);
  box-shadow: 0 0 0 1px var(--menu-range-track);
}

@media (prefers-reduced-motion: reduce) {
  .menu-reveal,
  #panel,
  .pro-subpanel,
  .menu-backdrop {
    transition: none;
  }
}

/* --- Desktop: panel below MENU, content height --- */
@media (min-width: 769px) {
  .chrome-menu-anchor {
    top: 20px;
    right: 20px;
    z-index: 35;
    gap: 0.5rem;
  }

  .chrome-menu-anchor .chrome-actions {
    position: relative;
    z-index: 36;
  }

  .chrome-menu-anchor .chrome-btn {
    width: auto;
  }

  .chrome-menu-anchor #generate-quick {
    position: static;
    transform: none;
  }

  .menu-reveal {
    position: static;
    width: var(--studio-sidebar-width);
    height: auto;
    max-height: calc(100dvh - 5.5rem);
    z-index: 28;
    display: block;
    grid-template-rows: unset;
    align-self: flex-end;
    overflow: visible;
    transform: translateX(0);
    transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: auto;
  }

  body.panel-hidden .menu-reveal {
    transform: translateX(calc(100% + 1.5rem));
    pointer-events: none;
    grid-template-rows: unset;
  }

  .menu-reveal > #panel {
    flex: none;
    min-height: 0;
    height: auto;
  }

  #panel {
    position: relative;
    isolation: isolate;
    width: 100%;
    height: auto;
    max-height: calc(100dvh - 5.5rem);
    align-self: stretch;
    transform: none;
    opacity: 1;
    border: 1px solid var(--menu-border);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
    transition: none;
    overflow: hidden;
  }

  body.panel-hidden #panel {
    opacity: 1;
    transform: none;
    pointer-events: none;
  }

  #panel .panel-scroll {
    flex: 0 1 auto;
    max-height: calc(100dvh - 8.5rem);
  }

  #panel .panel-block-free > .panel-section-title,
  #panel .panel-block-mobile-actions {
    display: none !important;
  }
}

/* --- Mobile --- */
@media (max-width: 768px) {
  .btn-label-long {
    display: none;
  }

  .btn-label-short {
    display: inline;
  }

  .chrome-menu-anchor {
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    height: var(--mobile-header-h, 52px);
    flex-direction: row;
    align-items: center;
    padding: 0 10px;
    z-index: 30;
  }

  .chrome-menu-anchor .chrome-actions {
    position: relative;
    z-index: 36;
    flex: 1;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    width: 100%;
    min-height: var(--mobile-header-h, 52px);
    gap: 0.5rem;
  }

  .chrome-menu-anchor .chrome-btn {
    width: auto;
  }

  .chrome-menu-anchor #toggle-panel {
    z-index: 2;
  }

  .chrome-menu-anchor #generate-quick {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
  }

  .chrome-bottom-only,
  .chrome-actions-bottom {
    display: none !important;
  }

  #panel .panel-block-free > .panel-section-title,
  #panel .panel-block-quality,
  #panel .panel-block-grain {
    display: none !important;
  }

  #panel .panel-block-mobile-actions {
    display: flex;
  }

  .menu-reveal {
    position: fixed;
    inset: 0;
    z-index: 29;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--mobile-header-h, 52px) + 12px) 1rem 4.5rem;
    pointer-events: none;
    grid-template-rows: unset;
    transform: none;
    width: auto;
    height: auto;
    transition: none;
  }

  body.panel-hidden .menu-reveal {
    transform: none;
    visibility: hidden;
    pointer-events: none;
  }

  body:not(.panel-hidden) .chrome-menu-anchor .menu-reveal {
    visibility: visible;
    pointer-events: none;
  }

  #panel {
    position: relative;
    width: min(var(--studio-menu-width), 100%);
    max-width: 100%;
    height: auto;
    max-height: min(70vh, calc(100dvh - var(--mobile-header-h, 52px) - 5rem));
    align-self: center;
    flex: 0 0 auto;
    margin: 0;
    transform-origin: center center;
    pointer-events: auto;
    z-index: 30;
    isolation: isolate;
    overflow: hidden;
    border: 1px solid var(--menu-border);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
  }

  body.panel-hidden #panel {
    opacity: 0;
    transform: scale(0.96);
    transition:
      opacity 0.2s ease,
      transform 0.26s cubic-bezier(0.22, 1, 0.36, 1);
  }

  body:not(.panel-hidden) #panel {
    opacity: 1;
    transform: scale(1);
  }

  body.mobile-studio #panel .panel-scroll {
    flex: 0 1 auto;
    max-height: min(55vh, calc(100dvh - var(--mobile-header-h, 52px) - 8rem));
    overflow-y: auto;
    padding: 1rem;
  }

  body.panel-hidden .menu-backdrop {
    display: none !important;
  }

  body:not(.panel-hidden) .menu-backdrop {
    display: block;
  }

  body.mobile-studio:not(.inverted) .chrome-btn {
    filter: invert(1) contrast(1.22);
  }

  body.mobile-studio.inverted .chrome-btn {
    filter: none;
  }

  body.mobile-studio:not(.panel-hidden):not(.inverted) #toggle-panel {
    filter: none;
    background: #ffffff;
    color: #000000;
    border-color: #e5e5e5;
  }

  body.mobile-studio:not(.panel-hidden):not(.inverted) #toggle-panel:hover {
    color: #000000;
    border-color: #000000;
  }

  body.mobile-studio.inverted:not(.panel-hidden) #toggle-panel {
    filter: none;
    background: #000000;
    color: #ffffff;
    border-color: #000000;
  }

  body.mobile-studio.inverted:not(.panel-hidden) #toggle-panel:hover {
    background: #111111;
    color: #ffffff;
    border-color: #111111;
  }

  body.mobile-studio.inverted:not(.panel-hidden) #generate-quick {
    filter: none;
    background: #ffffff;
    color: #000000;
    border-color: #e5e5e5;
  }

  body.mobile-studio .panel-block-mobile-actions .btn {
    filter: none;
    pointer-events: auto;
    cursor: pointer;
  }

  .pro-subpanel {
    top: var(--mobile-header-h, 52px);
    left: 50%;
    transform: translateX(-50%) translate3d(-6px, -8px, 0);
    width: min(var(--studio-menu-width), calc(100vw - 2rem));
    max-height: calc(100vh - var(--mobile-header-h, 52px) - 4rem);
  }

  body.studio-tier-pro[data-pro-submenu="tuning"] #panel-pro-tuning,
  body.studio-tier-pro[data-pro-submenu="geometry"] #panel-pro-geometry,
  body.studio-tier-pro[data-pro-submenu="effects"] #panel-pro-effects,
  body.studio-tier-pro[data-pro-submenu="looping"] #panel-pro-looping,
  body.studio-tier-pro[data-pro-submenu="video"] #panel-pro-video,
  body.studio-tier-pro[data-pro-submenu="export"] #panel-pro-export,
  body.studio-tier-basic[data-pro-submenu="tuning"] #panel-pro-locked-tuning,
  body.studio-tier-basic[data-pro-submenu="geometry"] #panel-pro-locked-geometry,
  body.studio-tier-basic[data-pro-submenu="effects"] #panel-pro-locked-effects,
  body.studio-tier-basic[data-pro-submenu="looping"] #panel-pro-locked-looping,
  body.studio-tier-basic[data-pro-submenu="video"] #panel-pro-locked-video,
  body.studio-tier-basic[data-pro-submenu="export"] #panel-pro-locked-export {
    transform: translateX(-50%) translate3d(0, 0, 0);
  }
}