/* ============================================================
   TOMBOL
   Tombol utama (.btn), tombol sekunder, bahaya, dan tombol ikon.
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.7rem 1.25rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 2px 8px var(--accent-glow);
}

.btn:hover { background: var(--primary-hover); transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover { background: var(--primary-light); color: var(--primary); }

.btn-danger { background: var(--danger); color: #ffffff; box-shadow: none; }
.btn-danger:hover { background: var(--danger); filter: brightness(0.92); }

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: 10px;
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.btn-icon:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.btn-icon:active { transform: scale(0.94); }
.btn-icon:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-icon.active { color: var(--primary); border-color: var(--primary); background: var(--primary-light); }
.btn-icon.active .icon { fill: currentColor; }
.btn-icon.danger { color: var(--danger); }
.btn-icon.danger:hover { background: rgba(239, 68, 68, 0.1); border-color: var(--danger); color: var(--danger); }