/* Botones y botones de ícono */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .78em 1.25em;
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  background: none;
  font-size: .9rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background-color .2s, color .2s, border-color .2s, opacity .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn .ico { width: 17px; height: 17px; }

.btn--dark { background: var(--ink); color: #fff; box-shadow: 0 14px 24px -16px rgba(30, 30, 34, .8); }
.btn--dark:hover { background: #000; }
.btn--sky { background: var(--sky-2); color: var(--ink); }
.btn--sky:hover { background: #b2d3f8; }
.btn--sage { background: var(--sage); color: var(--ink); }
.btn--sage:hover { background: #7db492; }
.btn--ghost { background: var(--surface-2); color: var(--ink); }
.btn--ghost:hover { background: var(--surface-3); }
.btn--outline { border-color: var(--line); background: var(--surface); color: var(--ink); }
.btn--outline:hover { border-color: var(--ink); }
.btn--danger { background: var(--coral); color: #fff; }
.btn--danger:hover { background: #dc4027; }

.btn--sm { padding: .58em .95em; font-size: .84rem; border-radius: 12px; }
.btn--lg { padding: .95em 1.4em; font-size: .98rem; }
.btn--block { width: 100%; }

.btn:disabled, .btn.is-loading { cursor: progress; opacity: .8; transform: none; }

.spinner {
  display: none;
  width: 17px; height: 17px;
  border: 2.5px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  opacity: .8;
  animation: spin .7s linear infinite;
}
.btn.is-loading .spinner { display: inline-block; }
.btn.is-loading > .ico { display: none; }

.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }

/* Botón redondo de ícono (como los de la barra superior de las referencias) */
.icon-btn {
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: 38px; height: 38px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: color .2s, background-color .2s, border-color .2s;
}
.icon-btn .ico { width: 17px; height: 17px; }
.icon-btn:hover { color: var(--ink); border-color: #cdd2dc; background: var(--surface-2); }
.icon-btn:disabled { opacity: .5; cursor: progress; }
.icon-btn--soft { border-color: transparent; background: var(--surface-2); }
.icon-btn--danger:hover { color: var(--coral-ink); border-color: #f6c4bb; background: var(--coral-tint); }
.icon-btn--success:hover { color: var(--mint-ink); border-color: #bfe3cc; background: var(--mint); }
.icon-btn--dark { border-color: rgba(255, 255, 255, .14); background: rgba(255, 255, 255, .06); color: #fff; }
.icon-btn--dark:hover { border-color: rgba(255, 255, 255, .3); background: rgba(255, 255, 255, .12); color: #fff; }

.link-subtle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--muted);
  font-size: .84rem;
  font-weight: 600;
  transition: color .2s;
}
.link-subtle:hover { color: var(--ink); }
.link-subtle .ico { width: 15px; height: 15px; }

@keyframes spin { to { transform: rotate(360deg); } }