/*
 * ARCANA Button System
 * Scope:
 * - NAV BUTTON: navigation / topbar / open-a-panel buttons
 * - ACTION BUTTON: save / confirm / cancel / reset / apply buttons
 * Excluded by design:
 * - SELECT BUTTON: skill buttons, arcana slots, class cards, dropdown list items
 *
 * Layout rule: do not change button width/height assigned by each card/layout file.
 */
:root {
  --arcana-btn-radius: 7px;
  --arcana-btn-border: rgba(37, 99, 235, 0.34);
  --arcana-btn-border-strong: rgba(37, 99, 235, 0.72);
  --arcana-btn-bg: #ffffff;
  --arcana-btn-text: #1f4fbf;
  --arcana-btn-fill: #2563eb;
  --arcana-btn-fill-hover: #1d4ed8;
  --arcana-btn-ghost-text: #334155;
  --arcana-btn-ghost-border: rgba(148, 163, 184, 0.58);
  --arcana-btn-pudding: cubic-bezier(0.2, 1.65, 0.28, 1);
  --arcana-btn-press: cubic-bezier(0.2, 0.9, 0.25, 1);
}

/* ACTION BUTTON --------------------------------------------------------- */
.arcana-btn:not(.arcana-wave-cta) {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--arcana-btn-radius);
  border-color: var(--arcana-btn-border);
  background: var(--arcana-btn-bg);
  color: var(--arcana-btn-text);
  font-weight: 700;
  letter-spacing: -0.02em;
  box-shadow: none;
  transform-origin: 50% 62%;
  transition:
    transform 0.22s var(--arcana-btn-pudding),
    border-color 0.18s ease,
    background-color 0.18s ease,
    color 0.18s ease,
    opacity 0.18s ease;
}

.arcana-btn:not(.arcana-wave-cta)::before {
  content: "";
  position: absolute;
  inset: 1px;
  z-index: -1;
  border-radius: calc(var(--arcana-btn-radius) - 2px);
  background: linear-gradient(115deg, transparent 0%, rgba(255,255,255,0.78) 42%, transparent 70%);
  opacity: 0;
  transform: translateX(-115%) skewX(-18deg);
  transition: opacity 0.18s ease;
  pointer-events: none;
}

.arcana-btn-primary:not(.arcana-wave-cta) {
  border-color: var(--arcana-btn-border-strong);
  background: var(--arcana-btn-fill);
  color: #ffffff;
}

.arcana-btn-ghost:not(.arcana-wave-cta) {
  border-color: var(--arcana-btn-ghost-border);
  background: #ffffff;
  color: var(--arcana-btn-ghost-text);
}

.arcana-btn:not(.arcana-wave-cta):hover:not(:disabled),
.arcana-btn:not(.arcana-wave-cta):focus-visible:not(:disabled),
.arcana-btn:not(.arcana-wave-cta).is-touch-preview:not(:disabled) {
  transform: translateY(-1px) scaleX(1.025) scaleY(1.055);
  border-color: var(--arcana-btn-border-strong);
  background: var(--arcana-btn-fill-hover);
  color: #ffffff;
  box-shadow: none;
}

.arcana-btn:not(.arcana-wave-cta):hover:not(:disabled)::before,
.arcana-btn:not(.arcana-wave-cta):focus-visible:not(:disabled)::before,
.arcana-btn:not(.arcana-wave-cta).is-touch-preview:not(:disabled)::before {
  opacity: 0.54;
  animation: arcanaActionBtnSheen 0.78s ease-out both;
}

.arcana-btn:not(.arcana-wave-cta):active:not(:disabled),
.arcana-btn:not(.arcana-wave-cta).is-executing:not(:disabled) {
  transform: translateY(1px) scaleX(1.045) scaleY(0.91);
  transition-duration: 0.08s;
  transition-timing-function: var(--arcana-btn-press);
}

.arcana-btn:disabled:not(.arcana-wave-cta) {
  opacity: 0.62;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* NAV BUTTON ------------------------------------------------------------ */
.arcana-class-picker-button {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  transform-origin: 50% 62%;
  transition:
    transform 0.24s var(--arcana-btn-pudding),
    border-color 0.18s ease,
    background-color 0.18s ease,
    color 0.18s ease,
    opacity 0.18s ease;
}

.arcana-class-picker-button::before {
  content: "";
  position: absolute;
  inset: 1px;
  z-index: -1;
  border-radius: inherit;
  background: linear-gradient(115deg, transparent 0%, rgba(255,255,255,0.86) 45%, transparent 72%);
  opacity: 0;
  transform: translateX(-112%) skewX(-18deg);
  pointer-events: none;
}

.arcana-class-picker-button:hover,
.arcana-class-picker-button:focus-visible,
.arcana-class-picker-button.is-touch-preview {
  transform: translateY(-1px) scaleX(1.018) scaleY(1.045);
}

.arcana-class-picker-button:hover::before,
.arcana-class-picker-button:focus-visible::before,
.arcana-class-picker-button.is-touch-preview::before {
  opacity: 0.62;
  animation: arcanaActionBtnSheen 0.82s ease-out both;
}

.arcana-class-picker-button:active,
.arcana-class-picker-button.is-executing {
  transform: translateY(1px) scaleX(1.035) scaleY(0.92);
}

/* Icon-only buttons are intentionally minimal. */
.arcana-entry-gate-close {
  box-shadow: none;
}

@keyframes arcanaActionBtnSheen {
  0% { transform: translateX(-116%) skewX(-18deg); }
  100% { transform: translateX(116%) skewX(-18deg); }
}

@media (prefers-reduced-motion: reduce) {
  .arcana-btn:not(.arcana-wave-cta),
  .arcana-class-picker-button {
    transition: none;
  }

  .arcana-btn:not(.arcana-wave-cta)::before,
  .arcana-class-picker-button::before {
    animation: none !important;
  }
}