/* button.css ─ sm/md/lg × primary/secondary/ghost/danger */

.wd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 4px;
  border: 1px solid transparent;
  font: 500 13px/1 var(--font);
  cursor: pointer;
  user-select: none;
  transition: background-color 120ms cubic-bezier(0.25, 1, 0.5, 1),
              border-color     120ms cubic-bezier(0.25, 1, 0.5, 1),
              color           120ms cubic-bezier(0.25, 1, 0.5, 1);
}
.wd-btn:focus-visible {
  outline: 2px solid var(--accent-subtle);
  outline-offset: 1px;
}
.wd-btn:active:not(:disabled) { opacity: 0.85; transition: opacity 60ms; }
.wd-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.wd-btn > svg { width: 12px; height: 12px; flex-shrink: 0; }

/* Sizes */
.wd-btn--sm { height: 28px; padding: 0 10px; font-size: 12px; }
.wd-btn--md { height: 32px; padding: 0 12px; font-size: 13px; }
.wd-btn--lg { height: 36px; padding: 0 14px; font-size: 13px; }

/* Variants */
.wd-btn--primary {
  background: var(--accent);
  color: oklch(98% 0.005 266);
}
.wd-btn--primary:hover:not(:disabled) {
  background: oklch(52% 0.20 266);
}

.wd-btn--secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border);
}
.wd-btn--secondary:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.wd-btn--ghost {
  background: transparent;
  color: var(--text-secondary);
}
.wd-btn--ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.wd-btn--danger {
  background: var(--signal-bad);
  color: oklch(98% 0.005 25);
}
.wd-btn--danger:hover:not(:disabled) {
  background: oklch(68% 0.22 25);
}

/* Icon-only (28px square) */
.wd-btn--icon {
  width: 28px;
  padding: 0;
}