/* PXLTAB Design System DS 1.2.1 — canonical action components.
   Owns button, icon-control, choice, segmented-control, disabled, loading,
   focus, press, and reduced-motion behavior across the landing site. */

.px-button {
  position: relative;
  min-height: var(--action-height-standard);
  padding: 0 var(--control-padding-inline);
  border: 1px solid transparent;
  border-radius: var(--control-radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--action-gap);
  background: transparent;
  color: inherit;
  font-family: var(--sans);
  font-size: var(--type-control);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  isolation: isolate;
  transition:
    transform var(--duration-emphasized) var(--ease-standard),
    background-color var(--duration-emphasized) var(--ease-standard),
    border-color var(--duration-emphasized) var(--ease-standard),
    color var(--duration-emphasized) var(--ease-standard),
    box-shadow var(--duration-emphasized) var(--ease-standard);
}

.px-button--compact { min-height: var(--action-height-compact); padding: 0 1rem; font-size: var(--type-control); line-height: 1; }
.px-button--large { min-height: var(--action-height-large); padding: 0 var(--control-large-padding-inline); font-size: var(--type-control-large); }
.px-button--block { width: 100%; }
.px-button--split { justify-content: space-between; }

.px-button .label,
.px-button > span,
.px-button > svg { position: relative; z-index: 2; }
.px-button .label { display: inline-flex; align-items: center; gap: var(--action-gap); }
.px-button .arrow,
.px-button .px-button__arrow { transition: transform var(--duration-emphasized) var(--ease-enter); }

.px-button:not(:disabled):not([aria-disabled="true"]):hover { transform: translateY(-2px); }
.px-button:not(:disabled):not([aria-disabled="true"]):hover :is(.arrow, .px-button__arrow) { transform: translateX(4px); }
.px-button:not(:disabled):not([aria-disabled="true"]):active { transform: translateY(0) scale(0.98); transition-duration: var(--duration-instant); }
.px-button--static-icon:not(:disabled):not([aria-disabled="true"]):hover svg { transform: none; }

.px-button--primary { border-color: var(--action-primary-border); background: var(--action-primary-bg); color: var(--action-primary-text); }
.px-button--primary:not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-primary-bg-hover); }
.px-button--primary:not(:disabled):not([aria-disabled="true"]):active { background: var(--action-primary-bg-active); }

.px-button--secondary { border-color: var(--action-secondary-border); background: var(--action-secondary-bg); color: var(--action-secondary-text); }
.px-button--secondary:not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-secondary-bg-hover); border-color: var(--color-border-strong); }
.px-button--secondary:not(:disabled):not([aria-disabled="true"]):active { background: var(--action-secondary-bg-active); }

.px-button--outline { border-color: var(--action-outline-border); background: var(--action-outline-bg); color: var(--action-outline-text); }
.px-button--outline:not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-outline-bg-hover); border-color: var(--color-border-strong); }
.px-button--outline:not(:disabled):not([aria-disabled="true"]):active { background: var(--action-outline-bg-active); }

.px-button--ghost { border-color: transparent; background: transparent; color: var(--color-text-primary); }
.px-button--ghost:not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-ghost-bg-hover); }
.px-button--ghost:not(:disabled):not([aria-disabled="true"]):active { background: var(--action-ghost-bg-active); }

.px-button--danger { border-color: var(--action-danger-border); background: var(--action-danger-bg); color: var(--action-danger-text); }
.px-button--danger:not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-danger-bg-hover); }
.px-button--danger:not(:disabled):not([aria-disabled="true"]):active { background: var(--action-danger-bg-active); }

.px-button--inverse { border-color: var(--action-inverse-bg); background: var(--action-inverse-bg); color: var(--action-inverse-text); }
.px-button--inverse:not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-inverse-bg-hover); border-color: var(--action-inverse-bg-hover); }
.px-button--inverse:not(:disabled):not([aria-disabled="true"]):active { background: var(--action-inverse-bg-active); border-color: var(--action-inverse-bg-active); }

.px-generation,
.px-mobile-generation {
  border-color: transparent;
  background: var(--action-generation-gradient);
  color: #FFFFFF;
  font-weight: 800;
  letter-spacing: 0.02em;
  box-shadow: 0 8px 24px rgba(4, 73, 64, 0.18), 0 7px 18px rgba(49, 35, 103, 0.18);
}
.px-menu__action { font-size: var(--type-caption); font-weight: 700; }
.px-menu__action .label { min-width: 0; flex: 1 1 auto; display: block; overflow: visible; color: inherit; line-height: 1.2; text-align: left; text-overflow: clip; white-space: normal; }
.px-menu__action .px-button__arrow { flex: none; margin-inline-start: auto; }
.px-footer__cta { font-weight: 800; letter-spacing: 0.025em; box-shadow: 0 10px 26px rgba(0, 0, 0, 0.24); }

/* Two canonical interaction families: standard sign-in lift by default,
   and explicit aurora for generation, large CTA, and pricing actions. */
.landing-page .px-button.px-button--hero-primary {
  border-color: transparent;
  background: var(--action-generation-gradient);
  color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(4, 73, 64, 0.18), 0 7px 18px rgba(49, 35, 103, 0.18);
}
.landing-page .px-button.px-button--hero-secondary { background: var(--bg-soft); color: var(--ink); border-color: var(--line); }

.px-button.px-button--aurora { overflow: hidden; transition-duration: var(--duration-standard); }
.px-button.px-button--aurora::before {
  content: "";
  position: absolute;
  inset: -200% -50%;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(45% 65% at 22% 30%, rgba(58,242,176,0.85), transparent 62%),
    radial-gradient(55% 70% at 62% 18%, rgba(76,201,240,0.75), transparent 62%),
    radial-gradient(45% 65% at 82% 62%, rgba(139,92,246,0.75), transparent 62%),
    radial-gradient(50% 60% at 38% 82%, rgba(67,97,238,0.70), transparent 62%);
  filter: blur(12px) saturate(130%);
  opacity: 0;
  will-change: opacity, transform;
  transform: translateZ(0);
  transition: opacity var(--duration-fast) var(--ease-standard);
}

.px-button.px-button--aurora:not(:disabled):not([aria-disabled="true"]):hover {
  transform: none;
  border-color: #0B0B0C;
  background: #0B0B0C;
  color: #FFFFFF;
  box-shadow: 0 8px 28px rgba(74, 93, 231, 0.30), 0 8px 24px rgba(58, 242, 176, 0.20);
}
.px-button.px-button--aurora:not(:disabled):not([aria-disabled="true"]):hover::before { opacity: 1; animation: pxActionAurora 5s linear infinite; }
.px-button.px-button--aurora:not(:disabled):not([aria-disabled="true"]):hover .label { text-shadow: 0 1px 10px rgba(0,0,0,0.35); }

@keyframes pxActionAurora {
  0% { transform: rotate(0deg) scale(1); filter: blur(12px) saturate(130%) hue-rotate(0deg); }
  50% { transform: rotate(180deg) scale(1.25); filter: blur(15px) saturate(170%) hue-rotate(45deg); }
  100% { transform: rotate(360deg) scale(1); filter: blur(12px) saturate(130%) hue-rotate(0deg); }
}

html[data-theme="dark"] .landing-page .px-button.px-button--hero-primary { background: var(--action-generation-gradient); color: #FFFFFF; border-color: transparent; }
html[data-theme="dark"] .landing-page .px-button.px-button--hero-secondary { background: #141A25; color: #F5F7FC; border-color: var(--line-2); }
html[data-theme="dark"] .px-button.px-button--aurora:not(:disabled):not([aria-disabled="true"]):hover { background: #252E3E; color: #FFFFFF; border-color: #46536A; }
.px-generation.px-button--aurora:not(:disabled):not([aria-disabled="true"]):hover,
.px-mobile-generation.px-button--aurora:not(:disabled):not([aria-disabled="true"]):hover {
  border-color: transparent;
  background: var(--action-generation-gradient);
  box-shadow: 0 9px 28px rgba(49, 35, 103, 0.28), 0 8px 24px rgba(58, 242, 176, 0.18);
}
html[data-theme="dark"] :is(.px-generation, .px-mobile-generation) {
  border-color: transparent;
  background: var(--action-generation-gradient);
  color: #FFFFFF;
}
html[data-theme="dark"] :is(.px-generation, .px-mobile-generation).px-button--aurora:not(:disabled):not([aria-disabled="true"]):hover { border-color: transparent; background: var(--action-generation-gradient); }
.landing-page .px-button.px-button--hero-primary.px-button--aurora:not(:disabled):not([aria-disabled="true"]):hover {
  border-color: transparent;
  background: var(--action-generation-gradient);
  box-shadow: 0 9px 28px rgba(49, 35, 103, 0.28), 0 8px 24px rgba(58, 242, 176, 0.18);
}

.px-control,
.px-icon-button,
.px-menu-button,
.px-choice,
.px-segment,
.px-text-button {
  border-radius: var(--control-radius);
  font-family: var(--sans);
  transition:
    transform var(--duration-emphasized) var(--ease-standard),
    background-color var(--duration-emphasized) var(--ease-standard),
    border-color var(--duration-emphasized) var(--ease-standard),
    color var(--duration-emphasized) var(--ease-standard),
    box-shadow var(--duration-emphasized) var(--ease-standard);
}

.px-control { height: var(--action-height-compact); min-height: var(--action-height-compact); border: 1px solid var(--header-border); background: var(--header-surface); color: var(--header-text); font-size: var(--type-control); cursor: pointer; }
.px-control:not(:disabled):hover { background: var(--header-surface-strong); border-color: rgba(75, 76, 189, 0.30); transform: translateY(-2px); }
.px-control:not(:disabled):active { transform: translateY(0) scale(0.98); transition-duration: var(--duration-instant); }

.px-icon-button {
  width: var(--action-height-compact);
  height: var(--action-height-compact);
  min-width: var(--action-height-compact);
  min-height: var(--action-height-compact);
  padding: 0;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-circle);
  display: inline-grid;
  place-items: center;
  background: var(--color-surface);
  color: var(--color-text-primary);
  cursor: pointer;
}
.px-icon-button:not(:disabled):hover { background: var(--color-canvas-subtle); border-color: var(--color-border-strong); transform: translateY(-2px); }
.px-icon-button:not(:disabled):active { transform: translateY(0) scale(0.98); transition-duration: var(--duration-instant); }
.px-header .px-icon-button { border-color: var(--header-border); background: var(--header-surface); color: var(--header-text); }
.px-header .px-icon-button:not(:disabled):hover { background: var(--header-surface-strong); border-color: rgba(75, 76, 189, 0.30); }

.px-menu-button { min-height: var(--action-height-standard); border: 1px solid transparent; background: transparent; color: var(--header-text); cursor: pointer; }
.px-menu-button:not(:disabled):hover { background: var(--header-hover); transform: translateY(-2px); }
.px-menu-button:not(:disabled):active { transform: translateY(0) scale(0.98); transition-duration: var(--duration-instant); }
.px-menu-button[aria-checked="true"] { border-color: var(--header-border); background: var(--header-surface); }

.px-choice { min-height: var(--action-height-compact); padding: 0.5rem 1rem; border: 1px solid var(--color-border-subtle); background: var(--color-surface); color: var(--color-text-secondary); font-size: var(--type-control); font-weight: 500; cursor: pointer; }
.px-choice:not(:disabled):hover { background: var(--color-canvas-subtle); border-color: var(--color-border-default); transform: translateY(-2px); }
.px-choice[aria-pressed="true"] { background: var(--action-primary-bg); color: var(--action-primary-text); border-color: var(--action-primary-border); }
.px-choice[aria-pressed="true"]:hover { background: var(--action-primary-bg-hover); }

.px-segment { min-height: var(--action-height-compact); padding: 0.55rem 1.25rem; border: 0; background: transparent; color: var(--color-text-muted); font-size: var(--type-control); font-weight: 600; cursor: pointer; }
.px-segment:not([aria-pressed="true"]):not(:disabled):hover { background: var(--action-ghost-bg-hover); color: var(--color-text-primary); transform: translateY(-2px); }
.px-segment:not(:disabled):active { transform: translateY(0) scale(0.98); transition-duration: var(--duration-instant); }
.px-segment[aria-pressed="true"] { background: var(--action-primary-bg); color: var(--action-primary-text); }
.px-segment[aria-pressed="true"] .save { background: rgba(255, 255, 255, 0.2); color: currentColor; }
html[data-theme="dark"] .px-segment[aria-pressed="true"] .save { background: #DDF2E9; color: #0B684B; }

.px-text-button { min-height: var(--action-height-compact); padding-inline: 0.25rem; border: 0; display: inline-flex; align-items: center; background: transparent; color: var(--color-text-primary); font-size: var(--type-control); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; cursor: pointer; }
.px-text-button:hover { color: var(--color-info); }

/* Standard hover is outline-only: keep each resting surface unchanged. */
.px-button--primary:not(.px-button--aurora):not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-primary-bg); }
.px-button--secondary:not(.px-button--aurora):not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-secondary-bg); }
.px-button--outline:not(.px-button--aurora):not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-outline-bg); }
.px-button--ghost:not(.px-button--aurora):not(:disabled):not([aria-disabled="true"]):hover { background: transparent; }
.px-button--danger:not(.px-button--aurora):not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-danger-bg); }
.px-button--inverse:not(.px-button--aurora):not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-inverse-bg); }
.px-control:not(:disabled):not([aria-disabled="true"]):hover { background: var(--header-surface); }
.px-icon-button:not(:disabled):not([aria-disabled="true"]):hover { background: var(--color-surface); }
.px-header .px-icon-button:not(:disabled):not([aria-disabled="true"]):hover { background: var(--header-surface); }
.px-menu-button:not(:disabled):not([aria-disabled="true"]):hover { background: transparent; }
.px-menu-button[aria-checked="true"]:not(:disabled):not([aria-disabled="true"]):hover { background: inherit; }
.px-choice:not([aria-pressed="true"]):not(:disabled):not([aria-disabled="true"]):hover { background: var(--color-surface); }
.px-choice[aria-pressed="true"]:not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-primary-bg); }
.px-segment:not([aria-pressed="true"]):not(:disabled):not([aria-disabled="true"]):hover { background: transparent; }
.px-segment[aria-pressed="true"]:not(:disabled):not([aria-disabled="true"]):hover { background: var(--action-primary-bg); }

/* The inset line keeps borderless menus/segments consistent without changing
   layout; the low-opacity outer ring is the only visual elevation. */
:is(
  .px-button:not(.px-button--aurora),
  .px-control,
  .px-icon-button,
  .px-menu-button,
  .px-choice,
  .px-segment:not([aria-pressed="true"])
):not(:disabled):not([aria-disabled="true"]):hover {
  border-color: var(--action-standard-hover-border);
  box-shadow:
    inset 0 0 0 1px var(--action-standard-hover-border),
    0 0 0 3px var(--action-standard-hover-ring);
}
.px-language-menu .px-menu-button[aria-checked="true"]:not(:disabled):not([aria-disabled="true"]):hover {
  border-color: #26262A;
  background: #26262A;
  color: #FFFFFF;
  box-shadow: none;
  transform: none;
}

:is(.px-button, .px-control, .px-icon-button, .px-menu-button, .px-choice, .px-segment):is(:disabled, [aria-disabled="true"]) {
  border-color: var(--action-disabled-border);
  background: var(--action-disabled-bg);
  color: var(--action-disabled-text);
  box-shadow: none;
  text-shadow: none;
  opacity: 1;
  cursor: not-allowed;
  transform: none;
}
:is(.px-button, .px-control, .px-icon-button, .px-menu-button, .px-choice, .px-segment):is(:disabled, [aria-disabled="true"])::before { display: none; }

.px-button[aria-busy="true"] { cursor: wait; }
.px-button[aria-busy="true"]::after {
  content: "";
  position: relative;
  z-index: 2;
  width: 1rem;
  height: 1rem;
  flex: none;
  border: 2px solid var(--action-spinner-track);
  border-top-color: var(--action-spinner-head);
  border-radius: var(--radius-circle);
  animation: pxActionSpin 0.75s linear infinite;
}
@keyframes pxActionSpin { to { transform: rotate(360deg); } }

@media (max-width: 560px) {
  .landing-page .hero-actions .px-button { width: 100%; }
  .pricing-page .px-segment { padding-inline: 0.875rem; }
}

@media (min-width: 901px) {
  .px-button--compact { padding-inline: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  :is(.px-button, .px-control, .px-icon-button, .px-menu-button, .px-choice, .px-segment, .px-text-button),
  .px-button :is(.arrow, .px-button__arrow) { transition: none !important; }
  .px-button.px-button--aurora::before { animation: none !important; filter: none; }
  .px-button[aria-busy="true"]::after { animation-duration: 1.5s; }
}