/* Buttons, copy button, theme toggle, tabs, status dots and tags.
   .is-hover, .is-press and .is-disabled mirror the real states so the styleguide can show them. */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  min-height: var(--control-h);
  min-width: 96px;
  padding: 0 var(--s-5);
  border: 0;
  border-radius: var(--r-control);
  font-size: var(--fs-16);
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  animation: enter var(--d-enter) var(--ease-enter) backwards;
  transition:
    background-color var(--d-hover) var(--ease-state),
    color var(--d-hover) var(--ease-state),
    box-shadow var(--d-hover) var(--ease-state),
    transform var(--d-press) var(--ease-state);
}

.btn:active,
.btn.is-press {
  transform: scale(.98);
  transition-duration: var(--d-press);
}

.btn:disabled,
.btn.is-disabled {
  cursor: not-allowed;
  transform: none;
  background-color: var(--surface-2);
  box-shadow: var(--hairline);
  color: var(--text-3);
}

.btn--primary {
  background-color: var(--accent);
  color: var(--on-accent);
}

.btn--primary:hover:not(:disabled),
.btn--primary.is-hover {
  background-color: var(--accent-hi);
  color: var(--on-accent);
}

.btn--primary:active:not(:disabled),
.btn--primary.is-press {
  background-color: var(--accent-lo);
  color: var(--on-accent-lo);
}

.btn--secondary {
  background-color: var(--surface-2);
  box-shadow: var(--hairline);
  color: var(--text);
}

.btn--secondary:hover:not(:disabled),
.btn--secondary.is-hover {
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.btn--secondary:active:not(:disabled),
.btn--secondary.is-press {
  background-color: var(--surface);
}

.btn--ghost {
  min-width: 0;
  padding: 0 var(--s-3);
  background-color: transparent;
  color: var(--accent-ink);
}

.btn--ghost:hover:not(:disabled),
.btn--ghost.is-hover {
  background-color: var(--wash);
}

.btn--ghost:active:not(:disabled),
.btn--ghost.is-press {
  background-color: var(--wash-hover);
}

.btn--ghost:disabled,
.btn--ghost.is-disabled {
  background-color: transparent;
  box-shadow: none;
}

/* Lift: the drop zone's main action. On hover the button rises off a accent-lo plate; on press
   it drops back onto it. The fill and the plate are layers, so only transform and opacity move. */
.btn--lift {
  position: relative;
  isolation: isolate;
  transition:
    color var(--d-hover) var(--ease-state),
    transform var(--d-hover) var(--ease-enter);
}

.btn--lift.btn--primary,
.btn--lift.btn--primary:hover:not(:disabled),
.btn--lift.btn--primary.is-hover,
.btn--lift.btn--primary:active:not(:disabled),
.btn--lift.btn--primary.is-press {
  background-color: transparent;
}

.btn--lift::before,
.btn--lift::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
}

.btn--lift::before {
  z-index: -2;
  background: var(--accent-lo);
  opacity: 0;
  transition: opacity var(--d-hover) var(--ease-state), transform var(--d-hover) var(--ease-enter);
}

.btn--lift::after {
  z-index: -1;
  background: var(--accent);
}

.btn--lift:hover:not(:disabled),
.btn--lift.is-hover {
  transform: translateY(-4px);
}

.btn--lift:hover:not(:disabled)::before,
.btn--lift.is-hover::before {
  opacity: 1;
  transform: translateY(4px);
}

.btn--lift:hover:not(:disabled)::after,
.btn--lift.is-hover::after {
  background: var(--accent-hi);
}

.btn--lift:active:not(:disabled),
.btn--lift.is-press {
  transform: translateY(0);
  transition-duration: var(--d-press);
}

.btn--lift:active:not(:disabled)::before,
.btn--lift.is-press::before {
  opacity: 1;
  transform: none;
}

.btn--lift:active:not(:disabled)::after,
.btn--lift.is-press::after {
  background: var(--accent-lo);
}

.btn--lift:disabled::before,
.btn--lift.is-disabled::before {
  opacity: 0;
}

.btn--lift:disabled::after,
.btn--lift.is-disabled::after {
  background: var(--surface-2);
}

.btn--small {
  min-height: 32px;
  min-width: 0;
  padding: 0 var(--s-3);
  font-size: var(--fs-14);
}

/* Wake site: the Uiverse gear spin, kept as a restore arrow. The spin pauses where it is
   instead of snapping back to 0deg, and runs for as long as the wake is in progress. */
.btn--wake {
  background-color: var(--wash);
  color: var(--accent-ink);
}

.btn--wake:hover:not(:disabled),
.btn--wake.is-hover {
  background-color: var(--wash-hover);
}

.btn--wake:active:not(:disabled),
.btn--wake.is-press {
  background-color: var(--wash);
}

.btn--wake .icon {
  animation: spin 2s linear infinite paused;
}

.btn--wake:hover:not(:disabled) .icon,
.btn--wake.is-hover .icon,
.btn--wake[aria-busy="true"] .icon {
  animation-play-state: running;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Copy: the copy icon draws out and a check draws in. */
.copy__icons {
  position: relative;
  width: 20px;
  height: 20px;
}

.copy__icons .icon {
  position: absolute;
  inset: 0;
  transition:
    opacity var(--d-hover) var(--ease-state),
    transform var(--d-enter) var(--ease-enter);
}

.copy__check {
  stroke-dasharray: 18;
  stroke-dashoffset: 18;
  transition: stroke-dashoffset var(--d-enter) var(--ease-enter);
}

.is-copied .copy__glyph {
  opacity: 0;
  transform: scale(.7) rotate(-12deg);
}

.is-copied .copy__check {
  stroke-dashoffset: 0;
}

.is-copied {
  color: var(--ok);
}

.btn--primary.is-copied {
  color: var(--on-accent);
}

/* Theme toggle: one dot slides along a hairline track. */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  min-height: var(--control-h);
  padding: 0 var(--s-3);
  border: 0;
  border-radius: var(--r-control);
  background: transparent;
  color: var(--text-2);
  font-size: var(--fs-14);
  font-weight: 500;
  cursor: pointer;
  animation: enter var(--d-enter) var(--ease-enter) backwards;
  transition: color var(--d-hover) var(--ease-state), background-color var(--d-hover) var(--ease-state);
}

.theme-toggle:hover,
.theme-toggle.is-hover {
  color: var(--text);
  background-color: var(--wash);
}

/* Track and thumb are plain shapes: no dot texture inside, so the control reads as one switch.
   The thumb is a 2px-radius square like the rest of the system, not a round knob. */
.theme-toggle__track {
  position: relative;
  width: 40px;
  height: 22px;
  border-radius: var(--r-control);
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--line-strong);
  transition: background-color var(--d-hover) var(--ease-state), box-shadow var(--d-hover) var(--ease-state);
}

.theme-toggle:hover .theme-toggle__track,
.theme-toggle.is-hover .theme-toggle__track {
  box-shadow: inset 0 0 0 1px var(--accent-ink);
}

.theme-toggle[aria-pressed="true"] .theme-toggle__track {
  background: var(--wash-hover);
}

.theme-toggle__dot {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 14px;
  height: 14px;
  border-radius: var(--r-tag);
  background: var(--accent);
  transition: transform var(--d-slide) var(--ease-slide);
}

.theme-toggle[aria-pressed="true"] .theme-toggle__dot {
  transform: translateX(18px);
}

.theme-toggle:active .theme-toggle__dot,
.theme-toggle.is-press .theme-toggle__dot {
  transform: scale(.8);
}

.theme-toggle[aria-pressed="true"]:active .theme-toggle__dot,
.theme-toggle[aria-pressed="true"].is-press .theme-toggle__dot {
  transform: translateX(18px) scale(.8);
}

.theme-toggle:disabled .theme-toggle__dot,
.theme-toggle.is-disabled .theme-toggle__dot {
  background: var(--text-3);
}

.theme-toggle:disabled,
.theme-toggle.is-disabled {
  cursor: not-allowed;
  color: var(--text-3);
  background: transparent;
}

/* Tabs: one bar glides under the selected tab. */
.tabs__list {
  position: relative;
  display: flex;
  gap: var(--s-1);
  overflow-x: auto;
  scrollbar-width: none;
  box-shadow: inset 0 -1px 0 var(--line);
}

.tab {
  position: relative;
  flex: none;
  min-height: var(--control-h);
  padding: 0 var(--s-4);
  border: 0;
  border-radius: var(--r-control) var(--r-control) 0 0;
  background: transparent;
  color: var(--text-2);
  font-size: var(--fs-15);
  font-weight: 500;
  cursor: pointer;
  animation: enter var(--d-enter) var(--ease-enter) backwards;
  transition:
    color var(--d-hover) var(--ease-state),
    background-color var(--d-hover) var(--ease-state),
    transform var(--d-press) var(--ease-state);
}

.tab:hover,
.tab.is-hover {
  color: var(--text);
  background-color: var(--wash);
}

.tab:active,
.tab.is-press {
  transform: translateY(1px);
}

.tab[aria-selected="true"] {
  color: var(--text);
}

/* Inset ring: the scrolling tab list would clip a ring drawn outside the tab. */
.tab:focus-visible,
.tab.is-focus {
  outline-offset: -2px;
}

.tab:disabled,
.tab.is-disabled {
  cursor: not-allowed;
  color: var(--text-3);
  background: transparent;
  transform: none;
}

.tabs__glide {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 1px;
  height: 2px;
  background: var(--accent);
  transform-origin: left center;
  transform: translateX(var(--glide-x, 0)) scaleX(var(--glide-w, 0));
  transition: transform var(--d-slide) var(--ease-slide);
  pointer-events: none;
}

.tabs__panel {
  padding-top: var(--s-4);
  animation: enter var(--d-enter) var(--ease-enter) backwards;
}

.tabs__panel[hidden],
.tabs__panel:empty {
  display: none;
}

/* Menu: a button that opens a short list of actions. The list floats, so it has the shadow. */
.menu {
  position: relative;
  display: inline-block;
}

.menu__chevron {
  transition: transform var(--d-hover) var(--ease-state);
}

.menu [aria-expanded="true"] .menu__chevron {
  transform: rotate(180deg);
}

.menu .btn[aria-expanded="true"] {
  box-shadow: inset 0 0 0 1px var(--accent-ink);
  color: var(--accent-ink);
}

/* The list is a step off the card it opens from: --surface-2 with a stronger edge, so it does
   not read as part of the panel underneath. */
.menu__list {
  position: absolute;
  top: calc(100% + var(--s-1));
  left: 0;
  z-index: 20;
  display: grid;
  min-width: 200px;
  padding: var(--s-1);
  border-radius: var(--r-panel);
  background: var(--surface-2);
  box-shadow: var(--shadow-float), inset 0 0 0 1px var(--line-strong);
  animation: menu-in var(--d-hover) var(--ease-enter) backwards;
}

.menu__list[hidden] {
  display: none;
}

.menu__item {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  min-height: 40px;
  padding: 0 var(--s-3);
  border: 0;
  border-radius: var(--r-control);
  background: transparent;
  color: var(--text);
  font-size: var(--fs-15);
  text-align: left;
  cursor: pointer;
  transition: background-color var(--d-hover) var(--ease-state), transform var(--d-press) var(--ease-state);
}

.menu__item .icon {
  color: var(--text-2);
}

.menu__item:hover,
.menu__item.is-hover {
  background: var(--wash-hover);
}

.menu__item:active,
.menu__item.is-press {
  transform: scale(.98);
}

.menu__item:focus-visible {
  outline-offset: -2px;
}

@keyframes menu-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
}

/* Status: a small dot plus a short label in the status colour. */
.status {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-size: var(--fs-14);
  font-weight: 500;
  color: var(--text-2);
}

.status-dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--text-2);
  transition: background-color var(--d-hover) var(--ease-state), transform var(--d-enter) var(--ease-goo);
}

.status--ok { color: var(--ok); }
.status--warn { color: var(--warn); }
.status--bad { color: var(--bad); }
.status--ok .status-dot, .status-dot--ok { background: var(--ok); }
.status--warn .status-dot, .status-dot--warn { background: var(--warn); }
.status--bad .status-dot, .status-dot--bad { background: var(--bad); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-half) var(--s-2);
  border-radius: var(--r-tag);
  box-shadow: inset 0 0 0 1px currentColor;
  font-size: var(--fs-12);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* Status tags are the one place a pill is allowed (docs/02). */
.tag--status {
  border-radius: var(--r-pill);
}

@media (prefers-reduced-motion: reduce) {
  .btn--lift:hover:not(:disabled),
  .btn--lift.is-hover,
  .btn--lift:hover:not(:disabled)::before,
  .btn--lift.is-hover::before,
  .btn:active,
  .btn.is-press,
  .tab:active,
  .tab.is-press {
    transform: none;
  }

  .btn,
  .tab,
  .theme-toggle,
  .tabs__panel {
    animation-name: fade-in;
  }

  .btn--wake .icon {
    animation: none;
  }

  .menu__list {
    animation-name: fade-in;
  }

  .menu__chevron,
  .menu__item:active,
  .menu__item.is-press {
    transform: none;
  }

  .theme-toggle__dot,
  .tabs__glide {
    transition: opacity var(--d-hover) var(--ease-state);
  }

  .copy__glyph,
  .is-copied .copy__glyph {
    transform: none;
  }
}