/* ============================================================
   EaseMotion CSS — buttons.css
   Composable, accessible button components
   ============================================================ */

/* ── Base Button ───────────────────────────────────────────── */

.ease-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ease-space-2);

  padding: var(--ease-space-3) var(--ease-space-6);
  font-family: var(--ease-font-sans);
  font-size: var(--ease-text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;

  border: 2px solid transparent;
  border-radius: var(--ease-radius-md);
  cursor: pointer;
  user-select: none;
  text-decoration: none;

  transition:
    background-color var(--ease-speed-fast) var(--ease-ease),
    color            var(--ease-speed-fast) var(--ease-ease),
    border-color     var(--ease-speed-fast) var(--ease-ease),
    box-shadow       var(--ease-speed-medium) var(--ease-ease),
    transform        var(--ease-speed-fast) var(--ease-ease-bounce);
}

.ease-btn:active {
  transform: scale(0.97);
}

.ease-btn:focus-visible {
  outline: 2px solid var(--ease-color-primary);
  outline-offset: 3px;
}

/* ── Variants ──────────────────────────────────────────────── */

/* Primary */
.ease-btn-primary {
  background-color: var(--ease-color-primary);
  color: #ffffff;
  border-color: var(--ease-color-primary);
}

.ease-btn-primary:hover {
  background-color: var(--ease-color-primary-dark);
  border-color: var(--ease-color-primary-dark);
  box-shadow: var(--ease-glow-primary);
}

/* Success */
.ease-btn-success {
  background-color: var(--ease-color-success);
  color: #ffffff;
  border-color: var(--ease-color-success);
}

.ease-btn-success:hover {
  background-color: var(--ease-color-success-dark);
  border-color: var(--ease-color-success-dark);
  box-shadow: var(--ease-glow-success);
}

/* Danger */
.ease-btn-danger {
  background-color: var(--ease-color-danger);
  color: #ffffff;
  border-color: var(--ease-color-danger);
}

.ease-btn-danger:hover {
  background-color: var(--ease-color-danger-dark);
  border-color: var(--ease-color-danger-dark);
  box-shadow: var(--ease-glow-danger);
}

/* Outline (Primary) */
.ease-btn-outline {
  background-color: transparent;
  color: var(--ease-color-primary);
  border-color: var(--ease-color-primary);
}

.ease-btn-outline:hover {
  background-color: var(--ease-color-primary);
  color: #ffffff;
}

/* Ghost */
.ease-btn-ghost {
  background-color: transparent;
  color: var(--ease-color-neutral-700);
  border-color: transparent;
}

.ease-btn-ghost:hover {
  background-color: var(--ease-color-neutral-100);
  color: var(--ease-color-neutral-900);
}

/* Link style */
.ease-btn-link {
  background: none;
  border: none;
  color: var(--ease-color-primary);
  padding-left: 0;
  padding-right: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.ease-btn-link:hover {
  color: var(--ease-color-primary-dark);
  text-decoration: none;
}

/* ── Sizes ─────────────────────────────────────────────────── */

.ease-btn-sm {
  padding: var(--ease-space-2) var(--ease-space-4);
  font-size: var(--ease-text-xs);
  border-radius: var(--ease-radius-sm);
}

.ease-btn-lg {
  padding: var(--ease-space-4) var(--ease-space-8);
  font-size: var(--ease-text-base);
  border-radius: var(--ease-radius-lg);
}

.ease-btn-xl {
  padding: var(--ease-space-5) var(--ease-space-10);
  font-size: var(--ease-text-lg);
  border-radius: var(--ease-radius-lg);
}

/* Full width */
.ease-btn-block {
  width: 100%;
}

/* Pill shape */
.ease-btn-pill {
  border-radius: var(--ease-radius-full);
}

/* Icon only */
.ease-btn-icon {
  padding: var(--ease-space-3);
  border-radius: var(--ease-radius-md);
}

/* ── States ────────────────────────────────────────────────── */

.ease-btn:disabled,
.ease-btn[disabled],
.ease-btn-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Loading spinner inside button */
.ease-btn-loading {
  pointer-events: none;
  position: relative;
}

.ease-btn-loading::after {
  content: '';
  display: inline-block;
  width: 0.85em;
  height: 0.85em;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: ease-kf-rotate 0.7s linear infinite;
  margin-left: var(--ease-space-2);
}

/* ── Hover Class (composable) ──────────────────────────────── */
/* Apply ease-btn-hover to any btn to add a lift+glow effect  */

.ease-btn-hover {
  transition:
    transform    var(--ease-speed-medium) var(--ease-ease-bounce),
    box-shadow   var(--ease-speed-medium) var(--ease-ease),
    background-color var(--ease-speed-fast) var(--ease-ease),
    border-color     var(--ease-speed-fast) var(--ease-ease);
}

.ease-btn-hover:hover {
  transform: translateY(-3px);
  box-shadow: var(--ease-shadow-lg), var(--ease-glow-primary);
}

/* ── Button Group ──────────────────────────────────────────── */

.ease-btn-group {
  display: inline-flex;
}

.ease-btn-group .ease-btn {
  border-radius: 0;
}

.ease-btn-group .ease-btn:first-child {
  border-radius: var(--ease-radius-md) 0 0 var(--ease-radius-md);
}

.ease-btn-group .ease-btn:last-child {
  border-radius: 0 var(--ease-radius-md) var(--ease-radius-md) 0;
}

.ease-btn-group .ease-btn:not(:last-child) {
  border-right-width: 1px;
}