/* ==========================================================================
 * Cutta · FX styles — command palette, cheatsheet, micro-interactions
 * Companion to js/cutta-cmdk.js + cutta-shortcuts.js + cutta-fx.js
 * ========================================================================== */

/* ============== Focus-visible across all interactive elements ============ */
:where(button, a, input, select, textarea, [tabindex], [role="button"]):focus-visible {
  outline: 2px solid var(--cutta-accent);
  outline-offset: 2px;
  border-radius: 4px;
}
/* Buttons already have rounded corners — match radius */
.c-btn:focus-visible, button.c-btn:focus-visible {
  outline-offset: 3px;
  outline-color: var(--cutta-accent);
}

/* ============== Button click spring ===================================== */
@keyframes cutta-spring {
  0%   { transform: scale(1);    }
  35%  { transform: scale(0.96); }
  100% { transform: scale(1);    }
}
.cutta-spring { animation: cutta-spring 220ms var(--cutta-ease-spring); }

/* ============== Copy-flash (200ms green flash) ========================== */
@keyframes cutta-flash {
  0%   { background-color: transparent; }
  30%  { background-color: var(--cutta-success-soft); color: var(--cutta-success); }
  100% { background-color: transparent; }
}
.cutta-flash { animation: cutta-flash 280ms var(--cutta-ease-out); }

/* ============== Shake (form invalid) ==================================== */
@keyframes cutta-shake {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-3px); }
  40%      { transform: translateX(3px);  }
  60%      { transform: translateX(-3px); }
  80%      { transform: translateX(3px);  }
}
.cutta-shake { animation: cutta-shake 320ms ease-in-out; }

/* ============== Success pulse (✓ icon spring) =========================== */
@keyframes cutta-pulse-ok {
  0%   { transform: scale(0.6); opacity: 0; }
  60%  { transform: scale(1.18); opacity: 1; }
  100% { transform: scale(1);    opacity: 1; }
}
.cutta-pulse-ok { animation: cutta-pulse-ok 600ms var(--cutta-ease-spring); }

/* ============== Back-to-top floating button ============================= */
.cutta-backtop {
  position: fixed; right: 20px; bottom: 20px;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--cutta-bg-2);
  color: var(--cutta-ink-2);
  border: 1px solid var(--cutta-line-2);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: var(--cutta-z-overlay);
  opacity: 0; pointer-events: none;
  transform: scale(0.6) translateY(8px);
  transition:
    opacity var(--cutta-dur-medium) var(--cutta-ease-out),
    transform var(--cutta-dur-medium) var(--cutta-ease-spring),
    background-color var(--cutta-dur-short),
    color var(--cutta-dur-short),
    box-shadow var(--cutta-dur-short);
  box-shadow: var(--cutta-shadow-md);
}
.cutta-backtop.is-visible {
  opacity: 1; pointer-events: auto;
  transform: scale(1) translateY(0);
}
.cutta-backtop:not(.is-visible) {
  opacity: 0 !important;
  pointer-events: none !important;
  animation: none !important;
}
.cutta-backtop:hover {
  background: var(--cutta-bg-3);
  color: var(--cutta-ink);
  box-shadow: var(--cutta-shadow-lg);
  transform: scale(1.05) translateY(-2px);
}

/* ============== Smooth scroll + reduced motion ========================= */
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============== Toast — undo button =================================== */
.c-toast--undo .c-toast__undo {
  margin-left: var(--cutta-space-2);
  padding: 4px 10px;
  background: var(--cutta-bg-3);
  border: 1px solid var(--cutta-line-2);
  border-radius: var(--cutta-radius-sm);
  color: var(--cutta-ink);
  font-size: var(--cutta-text-xs);
  cursor: pointer;
  transition: background-color var(--cutta-dur-short), border-color var(--cutta-dur-short);
}
.c-toast--undo .c-toast__undo:hover {
  background: var(--cutta-accent);
  color: var(--cutta-accent-ink);
  border-color: var(--cutta-accent);
}

/* ==========================================================================
 * COMMAND PALETTE (cutta-cmdk.js)
 * ========================================================================== */
.cutta-cmdk {
  position: fixed; inset: 0;
  z-index: var(--cutta-z-modal);
  opacity: 0; pointer-events: none;
  transition: opacity var(--cutta-dur-medium) var(--cutta-ease-out);
}
.cutta-cmdk.is-open { opacity: 1; pointer-events: auto; }
.cutta-cmdk:not(.is-open) {
  opacity: 0 !important;
  pointer-events: none !important;
  animation: none !important;
}
.cutta-cmdk__overlay {
  position: absolute; inset: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.cutta-cmdk.is-open .cutta-cmdk__overlay {
  background: var(--cutta-overlay-bg);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.cutta-cmdk__panel {
  position: relative;
  margin: 12vh auto 0;
  width: min(640px, calc(100vw - 32px));
  max-height: 70vh;
  background: var(--cutta-bg-1);
  border: 1px solid var(--cutta-line-2);
  border-radius: var(--cutta-radius-xl);
  box-shadow: var(--cutta-shadow-xl);
  overflow: hidden;
  display: flex; flex-direction: column;
  transform: translateY(-12px) scale(0.97);
  transition: transform var(--cutta-dur-medium) var(--cutta-ease-spring);
}
.cutta-cmdk.is-open .cutta-cmdk__panel { transform: translateY(0) scale(1); }
.cutta-cmdk__head {
  display: flex; align-items: center; gap: var(--cutta-space-3);
  padding: 14px 18px;
  border-bottom: 1px solid var(--cutta-line);
  color: var(--cutta-ink-3);
}
.cutta-cmdk__input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: 0;
  font-size: var(--cutta-text-base);
  color: var(--cutta-ink);
  font-family: var(--cutta-font-sans);
}
.cutta-cmdk__input::placeholder { color: var(--cutta-ink-4); }
.cutta-cmdk__esc {
  font-family: var(--cutta-font-mono);
  font-size: var(--cutta-text-2xs);
  color: var(--cutta-ink-3);
  background: var(--cutta-bg-2);
  border: 1px solid var(--cutta-line);
  border-bottom-width: 2px;
  padding: 2px 7px;
  border-radius: var(--cutta-radius-sm);
}
.cutta-cmdk__list {
  overflow-y: auto;
  padding: 6px;
  flex: 1;
}
.cutta-cmdk__group {
  font-size: var(--cutta-text-2xs);
  text-transform: uppercase;
  letter-spacing: var(--cutta-tracking-uppercase);
  color: var(--cutta-ink-4);
  padding: 10px 12px 4px;
  font-weight: var(--cutta-weight-semibold);
}
.cutta-cmdk__item {
  display: flex; align-items: center; gap: var(--cutta-space-3);
  padding: 10px 12px;
  border-radius: var(--cutta-radius-md);
  cursor: pointer;
  transition: background-color var(--cutta-dur-micro);
}
.cutta-cmdk__item.is-active {
  background: var(--cutta-accent-tint);
  color: var(--cutta-ink);
}
.cutta-cmdk__item:hover { background: var(--cutta-bg-2); }
.cutta-cmdk__item.is-active:hover { background: var(--cutta-accent-tint); }
.cutta-cmdk__ic {
  width: 28px; height: 28px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--cutta-bg-2);
  border: 1px solid var(--cutta-line);
  border-radius: var(--cutta-radius-sm);
  color: var(--cutta-ink-2);
}
.cutta-cmdk__item.is-active .cutta-cmdk__ic {
  background: var(--cutta-accent);
  color: var(--cutta-accent-ink);
  border-color: var(--cutta-accent);
}
.cutta-cmdk__ic svg { width: 14px; height: 14px; }
.cutta-cmdk__title {
  flex: 1;
  font-size: var(--cutta-text-sm);
  color: var(--cutta-ink);
  font-weight: var(--cutta-weight-medium);
}
.cutta-cmdk__hint {
  font-family: var(--cutta-font-mono);
  font-size: var(--cutta-text-2xs);
  color: var(--cutta-ink-3);
}
.cutta-cmdk__arr {
  color: var(--cutta-ink-4);
  opacity: 0;
  transition: opacity var(--cutta-dur-short);
}
.cutta-cmdk__item.is-active .cutta-cmdk__arr {
  opacity: 1;
  color: var(--cutta-accent);
}
.cutta-cmdk__empty {
  padding: 32px 16px;
  text-align: center;
  color: var(--cutta-ink-3);
  font-size: var(--cutta-text-sm);
}
.cutta-cmdk__foot {
  padding: 10px 16px;
  border-top: 1px solid var(--cutta-line);
  display: flex; align-items: center; gap: 16px;
  font-size: var(--cutta-text-2xs);
  color: var(--cutta-ink-3);
  background: var(--cutta-bg-2);
}
.cutta-cmdk__foot kbd {
  display: inline-block;
  padding: 1px 6px;
  margin-right: 4px;
  background: var(--cutta-bg-1);
  border: 1px solid var(--cutta-line);
  border-bottom-width: 2px;
  border-radius: var(--cutta-radius-xs);
  font-family: var(--cutta-font-mono);
  color: var(--cutta-ink-2);
  font-size: 10px;
}

/* ==========================================================================
 * CHEATSHEET (cutta-shortcuts.js)
 * ========================================================================== */
.cutta-cs {
  position: fixed; inset: 0;
  z-index: var(--cutta-z-modal);
  opacity: 0; pointer-events: none;
  transition: opacity var(--cutta-dur-medium) var(--cutta-ease-out);
}
.cutta-cs.is-open { opacity: 1; pointer-events: auto; }
.cutta-cs:not(.is-open) {
  opacity: 0 !important;
  pointer-events: none !important;
  animation: none !important;
}
.cutta-cs__overlay {
  position: absolute; inset: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.cutta-cs.is-open .cutta-cs__overlay {
  background: var(--cutta-overlay-bg);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.cutta-cs__panel {
  position: relative;
  margin: 14vh auto 0;
  width: min(720px, calc(100vw - 32px));
  background: var(--cutta-bg-1);
  border: 1px solid var(--cutta-line-2);
  border-radius: var(--cutta-radius-xl);
  box-shadow: var(--cutta-shadow-xl);
  overflow: hidden;
  transform: translateY(-12px) scale(0.97);
  transition: transform var(--cutta-dur-medium) var(--cutta-ease-spring);
}
.cutta-cs.is-open .cutta-cs__panel { transform: translateY(0) scale(1); }
.cutta-cs__head {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 20px 24px 18px;
  border-bottom: 1px solid var(--cutta-line);
}
.cutta-cs__t {
  font-family: var(--cutta-font-display);
  font-size: var(--cutta-text-xl);
  font-weight: var(--cutta-weight-medium);
  letter-spacing: var(--cutta-tracking-display);
  color: var(--cutta-ink);
  margin-bottom: 4px;
}
.cutta-cs__s {
  font-size: var(--cutta-text-sm);
  color: var(--cutta-ink-3);
}
.cutta-cs__s kbd {
  display: inline-block;
  padding: 0 6px;
  background: var(--cutta-bg-2);
  border: 1px solid var(--cutta-line);
  border-radius: 3px;
  font-family: var(--cutta-font-mono);
  font-size: var(--cutta-text-2xs);
}
.cutta-cs__x {
  background: transparent; border: 0; cursor: pointer;
  font-size: 22px;
  color: var(--cutta-ink-3);
  width: 28px; height: 28px;
  border-radius: var(--cutta-radius-sm);
  transition: background-color var(--cutta-dur-short), color var(--cutta-dur-short);
}
.cutta-cs__x:hover { background: var(--cutta-bg-2); color: var(--cutta-ink); }
.cutta-cs__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 20px 24px;
}
@media (max-width: 600px) { .cutta-cs__body { grid-template-columns: 1fr; } }
.cutta-cs__group {
  font-size: var(--cutta-text-2xs);
  text-transform: uppercase;
  letter-spacing: var(--cutta-tracking-uppercase);
  color: var(--cutta-ink-4);
  font-weight: var(--cutta-weight-semibold);
  padding-bottom: 8px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--cutta-line);
}
.cutta-cs__row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 0;
}
.cutta-cs__lbl { font-size: var(--cutta-text-sm); color: var(--cutta-ink-2); }
.cutta-cs__keys { display: inline-flex; align-items: center; gap: 4px; }
.cutta-cs__keys kbd {
  display: inline-block;
  padding: 2px 7px;
  background: var(--cutta-bg-2);
  border: 1px solid var(--cutta-line);
  border-bottom-width: 2px;
  border-radius: var(--cutta-radius-xs);
  font-family: var(--cutta-font-mono);
  color: var(--cutta-ink-2);
  font-size: 11px;
  min-width: 22px;
  text-align: center;
}
.cutta-cs__plus { color: var(--cutta-ink-4); font-size: 11px; padding: 0 2px; }
.cutta-cs__foot {
  padding: 12px 24px;
  border-top: 1px solid var(--cutta-line);
  background: var(--cutta-bg-2);
  display: flex; align-items: center; gap: 12px;
  font-size: var(--cutta-text-2xs);
  color: var(--cutta-ink-3);
}

/* ==========================================================================
 * Sliding tab content transition (Task 1.2)
 * Add .cutta-tab-content to a wrapper; on tab change, swap classes
 * ========================================================================== */
.cutta-tab-content { animation: cutta-tab-in 220ms var(--cutta-ease-out); }
@keyframes cutta-tab-in {
  from { opacity: 0; transform: translateX(8px); }
  to   { opacity: 1; transform: translateX(0); }
}
.cutta-tab-content--out { animation: cutta-tab-out 180ms var(--cutta-ease-out) forwards; }
@keyframes cutta-tab-out {
  to { opacity: 0; transform: translateX(-8px); }
}

/* ==========================================================================
 * ODOMETER (cutta/odometer.js)
 * Inline-flex container; each cell is a fixed-width slot. Digit cells have
 * an inner column of 0..9 stacked, scrolled with translateY in em units.
 * ========================================================================== */
.cutta-odo {
  display: inline-flex;
  align-items: baseline;
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.cutta-odo__cell {
  display: inline-block;
  height: 1em;
  overflow: hidden;
  position: relative;
  vertical-align: baseline;
}
.cutta-odo__col {
  display: flex;
  flex-direction: column;
  transition-property: transform;
  transition-timing-function: var(--cutta-ease-out);
  will-change: transform;
}
.cutta-odo__d,
.cutta-odo__s {
  display: block;
  height: 1em;
  line-height: 1;
  text-align: center;
}