/* Transitions.dev: text reveal, accordion and link feedback. */
/* transitions-dev — copy this :root block into your project once.
   Every transition snippet reads from these semantic names. */
:root {
  /* ── Motion tokens — shared scale ──────────────────────────────
     Reference these with var(--…) anywhere in your project. The
     transitions below ship literal values so each snippet works on
     its own; `transitions refine` maps hardcoded values back to
     these tokens. */
  /* Durations */
  --duration-stagger: 40ms;  /* per-item stagger offset */
  --duration-micro: 80ms;  /* tooltip/path delay, shake segment, large stagger */
  --duration-quick: 150ms;  /* modal/dropdown close, text swap, tooltip appear */
  --duration-fast: 250ms;  /* icon swap, dropdown/modal open, tabs sliding, page slide */
  --duration-medium: 350ms;  /* panel close, toast close */
  --duration-slow: 400ms;  /* panel open, skeleton content reveal, input clear */
  --duration-very-slow: 500ms;  /* emphasis moments, badge appear, text reveal, success check */
  /* Easings */
  --ease-smooth-out: cubic-bezier(0.22, 1, 0.36, 1);  /* modal/dropdown/panel open + close, page slide, resize, position change */
  --ease-in-out: ease-in-out;  /* icon swap, text swap, text reveal, skeleton reveal */
  --ease-out: ease-out;  /* tooltip open / close */
  --ease-linear: linear;  /* shimmer, skeleton pulse, spinner */
  --ease-bounce: cubic-bezier(0.34, 1.36, 0.64, 1);  /* badge pop open */
  --ease-bounce-strong: cubic-bezier(0.34, 3.85, 0.64, 1);  /* bouncy hover-out (avatar return) */
  /* Distances */
  --distance-micro: 4px;  /* text swap */
  --distance-small: 6px;  /* error shake (small segment) */
  --distance-base: 8px;  /* badge diagonal reveal, page slide, error shake (large segment) */
  --distance-medium: 12px;  /* text reveal */
  --distance-large: 30px;  /* check badge appear */
  /* Scales */
  --scale-large: 0.96;  /* modal open / close */
  --scale-medium: 0.97;  /* dropdown open */
  --scale-small: 0.98;  /* tooltip open */
  --scale-tiny: 0.99;  /* dropdown close */
  /* Blur */
  --blur-small: 2px;  /* panel reveal, icon swap, text swap, skeleton reveal, number pop-in */
  --blur-medium: 3px;  /* page slide, text reveal */
  --blur-large: 8px;  /* success check open */

  /* Card resize */
  --resize-dur: 300ms;
  --resize-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Number pop-in */
  --digit-dur: 500ms;
  --digit-distance: 8px;
  --digit-stagger: 70ms;
  --digit-blur: 2px;
  --digit-ease: cubic-bezier(0.34, 1.45, 0.64, 1);
  --digit-dir-x: 0;
  --digit-dir-y: 1;
  /* Notification badge */
  --badge-slide-dur: 260ms;
  --badge-pop-dur: 500ms;
  --badge-pop-close-dur: 180ms;
  --badge-fade-dur: 400ms;
  --badge-fade-close-dur: 180ms;
  --badge-blur: 2px;
  --badge-offset-x: -8.2px;
  --badge-offset-y: 12.4px;
  --badge-slide-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --badge-pop-ease: cubic-bezier(0.34, 1.36, 0.64, 1);
  --badge-close-ease: cubic-bezier(0.4, 0, 0.2, 1);
  /* Text states swap */
  --text-swap-dur: 150ms;
  --text-swap-translate-y: 4px;
  --text-swap-blur: 2px;
  --text-swap-ease: ease-in-out;
  /* Menu dropdown */
  --dropdown-open-dur: 250ms;
  --dropdown-close-dur: 150ms;
  --dropdown-pre-scale: 0.97;
  --dropdown-closing-scale: 0.99;
  --dropdown-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Modal open / close */
  --modal-open-dur: 250ms;
  --modal-close-dur: 150ms;
  --modal-scale: 0.96;
  --modal-scale-close: 0.96;
  --modal-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Panel reveal */
  --panel-open-dur: 400ms;
  --panel-close-dur: 350ms;
  --panel-translate-y: 100px;
  --panel-blur: 2px;
  --panel-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Page side-by-side */
  --page-slide-dur: 250ms;
  --page-fade-dur: 250ms;
  --page-slide-distance: 8px;
  --page-blur: 3px;
  --page-stagger: 0ms;
  --page-exit-enabled: 1;
  --page-slide-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --page-fade-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Icon swap */
  --icon-swap-dur: 250ms;
  --icon-swap-blur: 2px;
  --icon-swap-start-scale: 0.25;
  --icon-swap-ease: ease-in-out;
  /* Success check */
  --check-opacity-dur: 500ms;
  --check-rotate-dur: 500ms;
  --check-rotate-from: 80deg;
  --check-bob-dur: 500ms;
  --check-y-amount: 40px;
  --check-blur-dur: 500ms;
  --check-blur-from: 10px;
  --check-path-dur: 500ms;
  --check-path-delay: 80ms;
  --check-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --check-ease-opacity: cubic-bezier(0.22, 1, 0.36, 1);
  --check-ease-rotate: cubic-bezier(0.22, 1, 0.36, 1);
  --check-ease-bob: cubic-bezier(0.34, 1.35, 0.64, 1);
  --check-ease-path: cubic-bezier(0.22, 1, 0.36, 1);
  /* Avatar group hover */
  --avatar-lift: -4px;
  --avatar-dur: 320ms;
  --avatar-scale: 1.05;
  --avatar-falloff: 0.45;
  --avatar-ease-in: cubic-bezier(0.22, 1, 0.36, 1);
  --avatar-ease-out: cubic-bezier(0.34, 3.85, 0.64, 1);
  /* Error state shake */
  --shake-distance: 6px;
  --shake-overshoot: 4px;
  --shake-dur-a: 80ms;
  --shake-dur-b: 60ms;
  --shake-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --revert-hold: 3000ms;
  --revert-dur: 280ms;
  /* Input clear with dissolve */
  --clear-dur: 1000ms;
  --clear-out-dur: 400ms;
  --clear-in-dur: 400ms;
  --clear-out-fly: 12px;
  --clear-in-fly: 12px;
  --clear-out-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --clear-in-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --clear-blur: 2px;
  --glow-delay: 50ms;
  --glow-peak-at: 0.15;
  --glow-opacity: 0.42;
  --glow-spread: 1.5;
  /* Skeleton loader and reveal */
  --pulse-dur: 1000ms;
  --pulse-count: 1;
  --pulse-min: 0.5;
  --reveal-dur: 400ms;
  --reveal-blur: 2px;
  --reveal-ease: ease-in-out;
  /* Shimmer text */
  --shimmer-dur: 2000ms;
  --shimmer-base: #7c7c7c;
  --shimmer-highlight: #0d0d0d;
  --shimmer-band: 400%;
  --shimmer-ease: linear;
  /* Tabs sliding */
  --tabs-dur: 250ms;
  --tabs-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --tabs-text-muted: rgba(15, 15, 15, 0.8);
  --tabs-text-active: #0f0f0f;
  --tabs-bar-bg: #f1f1f1;
  --tabs-pill-bg: #ffffff;
  /* Tooltip open/close */
  --tt-in-dur: 150ms;
  --tt-out-dur: 50ms;
  --tt-scale: 0.98;
  --tt-delay: 80ms;
  --tt-in-ease: ease-out;
  --tt-out-ease: ease-out;
  --tt-move-dur: 160ms;
  --tt-move-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --tt-bg: #ffffff;
  --tt-fg: #2f2f2f;
  /* Texts reveal */
  --stagger-dur: 500ms;
  --stagger-distance: 12px;
  --stagger-stagger: 40ms;
  --stagger-blur: 3px;
  --stagger-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Card hover tilt */
  --tilt-perspective: 1000px;
  --tilt-return: 1000ms;
  --tilt-return-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --tilt-follow: 400ms;
  --tilt-follow-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --tilt-glare-opacity: 0.32;
  --tilt-glare-fade: 300ms;
  --tilt-glare-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Plus to menu morph */
  --morph-open-dur: 350ms;
  --morph-close-dur: 250ms;
  --morph-ease: cubic-bezier(0.34, 1.25, 0.64, 1);
  --morph-close-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --morph-r-closed: 40px;
  --morph-r-open: 20px;
  --morph-fade-dur: 200ms;
  --morph-slide: 40px;
  --morph-rotate: 45deg;
  --morph-scale: 0.97;
  --morph-blur: 2px;
  /* Accordion expand */
  --acc-expand: 250ms;
  --acc-collapse: 250ms;
  --acc-chevron: 250ms;
  --acc-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Toast open / close */
  --toast-open: 350ms;
  --toast-close: 250ms;
  --toast-distance: 16px;
  --toast-blur: 2px;
  --toast-scale: 0.97;
  --toast-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Like button */
  --like-color: #f40051;
  --like-fill: 150ms;
  --like-pop: 350ms;
  --like-pop-ease: cubic-bezier(0.34, 1.96, 0.64, 1);
  --like-particle-dur: 600ms;
  --like-particle-dist: 20px;
  --like-particle-size: 2.5px;
  --like-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Learn more hover */
  --learn-shift: 2px;
  --learn-spread: 8deg;
  --learn-in: 350ms;
  --learn-out: 350ms;
  --learn-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Checkbox check */
  --check-box: 150ms;
  --check-draw: 350ms;
  --check-delay: 0ms;
  --check-uncheck: 150ms;
  --check-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Spinning counter */
  --reel-dur: 1400ms;
  --reel-cell: 30px;
  --reel-spin-blur: 3px;
  --reel-stagger: 90ms;
  --reel-ease: cubic-bezier(0.16, 1, 0.3, 1);
  /* Toggle */
  --toggle-dur: 350ms;
  --toggle-travel: 14.66px;
  --toggle-ov1: 1px;
  --toggle-ov2: 0px;
  --toggle-track: 0ms;
  --toggle-ease: cubic-bezier(0.34, 1.35, 0.64, 1);
  /* Thinking states */
  --think-hold: 2000ms;
  --think-swap: 150ms;
  --think-gap: 50ms;
  --think-distance: 8px;
  --think-blur: 2px;
  --think-shimmer: 2000ms;
  --think-base: #7c7c7c;
  --think-highlight: #0d0d0d;
  --think-ease: ease-in-out;
  /* Reasoning stream */
  --reason-hold: 840ms;
  --reason-step: 500ms;
  --reason-lines: 2;
  --reason-fade: 28px;
  --reason-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Streaming text */
  --stream-gap: 60ms;
  --stream-fade: 350ms;
  --stream-blur: 1px;
  --stream-ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* Matrix dot loader */
  --matrix-cycle: 1200ms;
  --matrix-base: #d9d9d9;
  --matrix-active: #85858f;
  --matrix-ease: ease-in-out;
  /* Banner stacking */
  --stack-open: 350ms;
  --stack-close: 250ms;
  --stack-rise: 60px;
  --stack-blur: 2px;
  --stack-scale: 0.97;
  --stack-peek: 12px;
  --stack-spread-gap: 8px;
  --stack-depth-scale: 0.06;
  --stack-depth-fade: 0.4;
  --stack-depth1-blur: 1px;
  --stack-depth2-blur: 2px;
  --stack-ease: cubic-bezier(0.22, 1, 0.36, 1);
}


/* Lines start translated down + blurred + invisible; .is-shown
   on the parent flips them to their resting state. The second
   line's transition-delay holds it back by --stagger-stagger
   so the eye lands on the headline first. */
.t-stagger-line {
  display: block;
  opacity: 0;
  transform: translateY(var(--stagger-distance));
  filter: blur(var(--stagger-blur));
  transition:
    opacity   var(--stagger-dur) var(--stagger-ease),
    transform var(--stagger-dur) var(--stagger-ease),
    filter    var(--stagger-dur) var(--stagger-ease);
  will-change: transform, opacity, filter;
}
.t-stagger-line--2 { transition-delay: var(--stagger-stagger); }

.t-stagger.is-shown .t-stagger-line {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}
/* Exit decouples from the stagger: same fade for every line,
   no Y return, no blur — so the disappearance reads as a
   single quiet fade instead of a reverse reveal. */
.t-stagger.is-hiding .t-stagger-line {
  opacity: 0;
  transform: translateY(0);
  filter: blur(0);
  transition:
    opacity 200ms ease,
    transform 0s linear,
    filter 0s linear;
  transition-delay: 0s;
}

@media (prefers-reduced-motion: reduce) {
  .t-stagger-line { transition: none !important; }
}

/* grid-template-rows 0fr → 1fr gives a clean height animation
   with no JS measurement; the inner element clips overflow. */
.t-acc-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--acc-collapse) var(--acc-ease);
}
.t-acc[data-open="true"] .t-acc-panel {
  grid-template-rows: 1fr;
  transition: grid-template-rows var(--acc-expand) var(--acc-ease);
}
.t-acc-panel-inner {
  overflow: hidden;
  opacity: 0;
  filter: blur(2px);
  transition:
    opacity var(--acc-collapse) var(--acc-ease),
    filter var(--acc-collapse) var(--acc-ease);
}
.t-acc[data-open="true"] .t-acc-panel-inner {
  opacity: 1;
  filter: blur(0);
  transition:
    opacity var(--acc-expand) var(--acc-ease),
    filter var(--acc-expand) var(--acc-ease);
}
/* Flip the chevron vertically to turn the "v" into a "^".
   scaleY(-1) about the centre passes through a flat line at
   the midpoint (same look as a `d:` path morph) but animates
   in every browser, unlike CSS `d:` morphing (Chromium only).
   The chevron path is symmetric about the 16x16 viewBox
   centre, so the flip lands exactly on the "^"; non-scaling
   -stroke keeps the stroke width constant through the flip. */
.t-acc-chevron {
  display: inline-flex;
  transform: scaleY(1);
  transform-origin: center;
  transition: transform var(--acc-chevron) var(--acc-ease);
}
.t-acc-chevron path { vector-effect: non-scaling-stroke; }
.t-acc[data-open="true"] .t-acc-chevron {
  transform: scaleY(-1);
}

@media (prefers-reduced-motion: reduce) {
  .t-acc-panel, .t-acc-panel-inner, .t-acc-chevron {
    transition: none !important;
  }
}

.t-learn-chevron {
  display: inline-flex;
  transform: translateX(0);
  transition: transform var(--learn-out) var(--learn-ease);
}
.t-learn-arm {
  transform-box: view-box;
  transform-origin: 10px 8px;
  vector-effect: non-scaling-stroke;
  transition: transform var(--learn-out) var(--learn-ease);
}
.t-learn:hover .t-learn-chevron { transform: translateX(var(--learn-shift)); transition-duration: var(--learn-in); }
.t-learn:hover .t-learn-arm { transition-duration: var(--learn-in); }
.t-learn:hover .t-learn-arm-top { transform: rotate(var(--learn-spread)); }
.t-learn:hover .t-learn-arm-bot { transform: rotate(calc(var(--learn-spread) * -1)); }

@media (prefers-reduced-motion: reduce) {
  .t-learn-chevron, .t-learn-arm { transition: none !important; }
}

.t-icon-swap {
  position: relative;
  display: inline-grid;
}
.t-icon-swap .t-icon {
  grid-area: 1 / 1;
  transition:
    opacity   var(--icon-swap-dur) var(--icon-swap-ease),
    filter    var(--icon-swap-dur) var(--icon-swap-ease),
    transform var(--icon-swap-dur) var(--icon-swap-ease);
  will-change: opacity, filter, transform;
}
.t-icon-swap[data-state="a"] .t-icon[data-icon="a"],
.t-icon-swap[data-state="b"] .t-icon[data-icon="b"] {
  opacity: 1;
  filter: blur(0);
  transform: scale(1);
}
.t-icon-swap[data-state="a"] .t-icon[data-icon="b"],
.t-icon-swap[data-state="b"] .t-icon[data-icon="a"] {
  opacity: 0;
  filter: blur(var(--icon-swap-blur));
  transform: scale(var(--icon-swap-start-scale));
}

@media (prefers-reduced-motion: reduce) {
  .t-icon-swap .t-icon { transition: none !important; }
}